#restraint.device__constraint a device that stops something from moving; "the car did not have proper restraints fitted"
supertype: device an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
subtype: air_bag a safety restraint in an automobile; the bag inflates on collision and prevents the driver or passenger from being thrown forward
subtype: dive_brake__airbrake a small parachute or articulated flap to reduce the speed of an aircraft
subtype: arrester_hook__arrester a restraint that slows airplanes as they land on the flight deck of an aircraft carrier
subtype: band.restraint put around something to hold it together
subtype: brake_band__brakeband a band that can be tightened around a shaft to stop its rotation
subtype: collet a band or collar that holds an individual stone in a jewellery setting
subtype: withe band or rope made of twisted twigs or stems
subtype: brake a restraint used to slow or stop a vehicle
subtype: airbrake a vehicular brake that operates by compressed air; especially for heavy vehicles
subtype: brake_system__brakesystem__brakes__brake brake consisting of a combination of interacting parts that work to slow a motor vehicle
subtype: hydraulic_brake__hydraulicbrake__hydraulic_brakes brake system in which a brake pedal moves a piston in the master cylinder; brake fluid then applies great force to the brake pads or shoes
subtype: disk_brake__disc_brake hydraulic brake in which friction is applied to both sides of spinning disk by the brake pads
subtype: drum_brake__drum_brakes hydraulic brake in which friction is applied to the inside of a spinning drum by the brake shoe
subtype: foot_brake hydraulic brake operated by pressing on a foot pedal
subtype: coaster_brake__coasterbrake a brake on a bicycle that engages with reverse pressure on the pedals
subtype: hand_brake__emergency__emergency_brake__emergencybrake__parking_brake__parkingbrake a brake operated by hand; usually operates by mechanical linkage
subtype: brake_pads pads apply friction to both sides of the brake disk
subtype: brake_shoe__brakeshoe__shoe restraint provided when the linings of the brake shoes are moved hydraulically against the brake drum to stop its rotation
subtype: catch.restraint__stop a restraint that checks the motion of something; "he used a book as a stop to hold the door open"
subtype: doorstop__doorstopper a stop that keeps open doors from moving
subtype: pawl__detent__click__dog a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
subtype: tripper a catch mechanism that acts as a switch; "the pressure activates the tripper and releases the water"
subtype: chain.restraint anything that acts as a restraint
subtype: holdfast__fastener__fastening restraint that attaches to something or holds something in place
subtype: bellyband a strap around the belly of a draft animal holding the shafts of a wagon
subtype: buckle fastener that fastens together two ends of a belt or strap; often has loose prong
subtype: belt_buckle the buckle used to fasten a belt
subtype: button a round fastener sewn to shirts and coats etc to fit through buttonholes
subtype: coat_button a button on a coat
subtype: shirt_button__shirtbutton a button on a shirt
subtype: carabiner__karabiner__snap_ring an oblong metal ring with a spring clip; used in mountaineering to attach a rope to a piton or to connect two ropes
subtype: catch.holdfast a fastener that fastens or locks a door or window
subtype: hasp a fastener for a door or lid; a hinged metal strap fits over a staple and is locked with a pin or padlock
subtype: hood_latch a catch that holds the hood of a car shut
subtype: hook.catch a catch for locking a door
subtype: latch catch for fastening a door or gate; a bar that can be lowered or slid into a groove
subtype: clasp a fastener (as a buckle or hook) that is used to hold two things together
subtype: cleat.holdfast a fastener (usually with two projecting horns) around which a rope can be secured
subtype: clip.holdfast any of various small fasteners used to hold loose articles together
subtype: bulldog_clip__bulldogclip__alligator_clip__alligatorclip a clip with a spring that closes the metal jaws
subtype: hair_slide (British) a decorative hinged clip that girls and women put in their hair to hold it in place
subtype: paperclip__gem_clip__gemclip a wire or plastic clip for holding sheets of paper together
subtype: clothespin__clothes_pin__clothespin__clothes_peg__clothespeg wood or plastic fastener; for holding clothes on a clothesline
subtype: corrugated_fastener__wiggle_nail a small strip of corrugated steel with sharp points on one side; hammered across wood joints in rough carpentry
subtype: cotter__cottar fastener consisting of a wedge or pin inserted through a slot to hold two other pieces together
subtype: cotter_pin a cotter consisting of a split pin that is secured (after passing through a hole) by splitting the ends apart
subtype: cringle__loop__grommet fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines
subtype: dowel_pin__dowelpin__dowel__joggle a fastener that is inserted into holes in two adjacent pieces and holds them together
subtype: fillet__stopping fastener consisting of a narrow strip of welded metal used to join steel members
subtype: hook_and_eye a kind of fastener used on clothing
subtype: knot any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object
subtype: barrel_knot__blood_knot__bloodknot a knot used for tying fishing leaders together; the ends of the two leaders are wrapped around each other two or three times
subtype: bowknot__bow a knot with two loops and loose ends; used to tie shoelaces
subtype: carrick_bend__carrickbend a knot used to connect the ends of two large ropes or hawsers
subtype: clove_hitch__clovehitch a knot used to fasten a line temporarily to a post or spar
subtype: figure_of_eight__figure_eight a knot having the shape of the numeral 8; tied in a rope that has been passed through a hole or pulley and that prevents the rope from coming loose
subtype: fisherman's_bend__fisherman'sbend a knot for tying a line to a spar or ring
subtype: fisherman's_knot__fisherman'sknot__true_lover's_knot__truelove_knot a knot for tying the ends of two lines together
subtype: Gordian_knot an intricate knot tied by King Gordius of Phrygia and cut with his sword by Alexander the Great after hearing that whoever undid it would become ruler of Asia
subtype: half_hitch a knot used to fasten a rope temporarily to an object; usually tied double
subtype: hawser_bend a knot uniting the ends of two lines
subtype: hitch a knot that can be undone by pulling against the strain that holds it
subtype: Blackwall_hitch a simple hitch used for temporarily attaching a line to a hook
subtype: cat's-paw__cat'spaw a hitch in the middle of rope that has two eyes into which tackle can be hooked
subtype: rolling_hitch__rollinghitch a hitch for fastening a line to a spar or another rope
subtype: magnus_hitch a rolling hitch similar to a clove hitch
subtype: sheet_bend__sheetbend__becket_bend__weaver's_knot__weaver's_hitch a hitch used for temporarily tying a rope to the middle of another rope (or to an eye)
subtype: timber_hitch a hitch used to secure a rope to a log or spar; often supplemented by a half hitch
subtype: loop_knot any of various knots used to make a fixed loop in a rope
subtype: bowline_knot__bowlineknot__bowline a loop knot that neither slips not jams
subtype: love_knot__lover's_knot__lover'sknot a stylized knot used as an emblem of love
subtype: overhand_knot a simple small knot (often used as part of other knots)
subtype: prolonge_knot__sailor's_breastplate a knot in the rope used to drag a gun carriage
subtype: sheepshank a knot for shortening a line
subtype: slipknot a knot at the end of a cord or rope that can slip along the cord or rope around which it is made
subtype: square_knot a double knot made of two half hitches and used to join the ends of two cords
subtype: reef_knot__flat_knot a square knot used in a reef line
subtype: granny_knot__granny a reef knot crossed the wrong way and therefore insecure
subtype: stopper_knot__stopperknot a knot that prevents a rope from passing through a hole
subtype: Matthew_Walker_knot__Matthew_Walker a kind of stopper knot
subtype: surgeon's_knot__surgeon'sknot any of several knots used in tying stitches or ligatures
subtype: Turk's_head an ornamental knot that resembles a small turban
subtype: Windsor_knot a wide triangular knot for tying a tie
subtype: lashing rope that is used for fastening something to something else; "the boats were held together by lashings"
subtype: linkup__link__tie__tie-in__tiein a fastener that serves to join or link; "the walls are held together with metal links placed in the wet mortar during construction"
subtype: bridge.linkup__nosepiece the link between two lenses; rests on nose
subtype: lock.holdfast a fastener fitted to a door or drawer to keep it firmly closed
subtype: combination_lock__combinationlock lock that can be opened only by turning dials in a special sequence
subtype: cylinder_lock a lock in which a cylinder rotates to move bolt; tumblers are pins; inserting the key lifts and aligns the pins to free the cylinder to rotate
subtype: doorlock a lock on an exterior door
subtype: night_latch__nightlatch doorlock operated by a knob on the inside and a key on the outside
subtype: door_latch__latch spring-loaded doorlock that can only be opened from the outside with a key
subtype: lever_lock__leverlock a lock whose tumblers are levers that must be raised to a given position so that the bolt can move
subtype: padlock a detachable lock; has a hinged shackle that can be passed through the staple of a hasp or the links in a chain and then snapped shut
subtype: sash_fastener__sash_lock__window_lock a lock attached to the sashes of a double hung window that can fix both in the shut position
subtype: locker a fastener that locks or closes
subtype: nail a thin pointed piece of metal that is hammered into materials as a fastener
subtype: brad a small nail
subtype: clout_nail__cloutnail__clout a short nail with a flat head; used to attach sheet metal to wood
subtype: doornail a nail with a large head; formerly used to decorate doors
subtype: eightpenny_nail a nail 2.5 inches long
subtype: fourpenny_nail__fourpennynail a nail 1.5 inches long
subtype: hobnail a short nail with a thick head; used to protect the soles of boots
subtype: sixpenny_nail a nail 2 inches long
subtype: spike.nail a long metal nail
subtype: staple.nail a short U-shaped wire nail for securing cables
subtype: stub_nail a short thick nail
subtype: tack.nail a short nail with a sharp point and a large head
subtype: carpet_tack used to nail down carpets
subtype: thumbtack__drawing_pin__drawingpin__pushpin a tack for attaching papers to a bulletin board or drawing board
subtype: tintack tack or small nail of tinned iron
subtype: tenpenny_nail a nail 3 inches long
subtype: nut_and_bolt__nutandbolt a fastener made by screwing a nut onto a threaded bolt
subtype: paper_fastener__paperfastener a fastener for holding a sheet of paper in place
subtype: staple paper fastener consisting of a short length of U-shaped wire that can fasten papers together
subtype: thumbtack__drawing_pin__drawingpin__pushpin a tack for attaching papers to a bulletin board or drawing board
subtype: pin a small slender (often pointed) piece of wood or metal used to support or fasten or attach things
subtype: barrette a pin for holding women's hair in place
subtype: bitt_pin a pin through the bitthead to keep the mooring lines from slipping off
subtype: hairpin a double pronged pin used to hold women's hair in place
subtype: bobby_pin__bobbypin__hairgrip__grip a flat wire hairpin whose prongs press tightly together; used to hold bobbed hair in place; "in England they call a bobby pin a grip"
subtype: bodkin.hairpin formerly a long hairpin; usually with an ornamental head
subtype: hatpin a long sturdy pin used by women to secure a hat to their hair
subtype: linchpin__lynchpin pin inserted through an axletree to hold a wheel on
subtype: peg.pin a wooden pin pushed or driven into a surface
subtype: golf_tee__tee a short peg put into the ground to hold a golf ball off the ground
subtype: tent_peg a peg driven into the ground to hold a rope supporting a tent
subtype: treenail__trenail__trunnel a wooden peg that is used to fasten timbers in shipbuilding; water causes the peg to swell and hold the timbers fast
subtype: rivet heavy pin having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together
subtype: safety_pin a pin in the form of a clasp; has a guard so the point of the pin will not stick the user
subtype: skewer a long pin for holding meat in position while it is being roasted
subtype: spit a skewer for holding meat over a fire
subtype: turnspit a roasting spit that can be turned
subtype: straight_pin pin consisting of a short straight stiff piece of wire with a pointed end; used to fasten pieces of cloth or paper together
subtype: toggle a wooden peg or pin inserted into the eye at the end of rope in order to fasten it to something
subtype: wrist_pin__wristpin__gudgeon_pin__gudgeonpin pin joining a piston to a connecting rod
subtype: screw a fastener with a tapered threaded shank and a slotted head
subtype: Allen_screw a screw with a hexagonal hole in the head
subtype: bolt.screw a screw that screws into a nut to form a fastener
subtype: carriage_bolt a round-headed bolt for timber; threaded along part of the shank; inserted into holes already drilled
subtype: expansion_bolt__expansionbolt a bolt that has an attachment that expands as the bolt is driven into a surface
subtype: kingbolt__kingpin__swivel_pin bolt that provides a steering joint in a motor vehicle
subtype: machine_bolt__machinebolt a bolt with a square or hexagonal head on one end and a threaded shaft on the other end; tightened with a wrench; used to connect metal parts
subtype: stove_bolt__stovebolt a small machine bolt
subtype: cap_screw__capscrew a threaded screw for machine parts; screws into a tapped hole
subtype: machine_screw__machinescrew a screw used either with a nut or with a tapped hole; slotted head can be driven by a screwdriver
subtype: metal_screw__metalscrew screw made of metal
subtype: Phillips_screw (trademark) a screw with a special head having crossed slots
subtype: thumbscrew screw designed to be turned with the thumb and fingers
subtype: woodscrew a metal screw that tapers to a point so that it can be driven into wood with a screwdriver
subtype: lag_screw__lagscrew__lag_bolt__lagbolt a heavy woodscrew with a square or hexagonal head that is driven in with a wrench
subtype: screw_eye__screweye a woodscrew having its shank bent into a ring
subtype: worm.screw screw thread on a gear with the teeth of a worm wheel or rack
subtype: seal.holdfast fastener that provides a tight and perfect closure
subtype: break_seal__breakseal a seal that must be broken when first used and cannot easily be resealed; "it was stored in a tube with a break seal"
subtype: gasket seal consisting of a ring for packing pistons or sealing a pipe joint
subtype: head_gasket a gasket to seal a cylinder head
subtype: O_ring a gasket consisting of a flat ring of rubber or plastic; used to seal a joint against high pressure
subtype: piston_ring seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall
subtype: washer seal consisting of a flat disk placed to prevent leakage
subtype: lockring__lock_washer washer that prevents a nut from loosening
subtype: sealing_wax__sealingwax__seal fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters
subtype: slide_fastener__slidefastener__zip__zip-fastener__zipfastener a fastener for locking together two toothed edges by means of a sliding tab
subtype: snap_fastener__press_stud__pressstud a fastener used on clothing
subtype: gag__muzzle restraint put into a person's mouth to prevent speaking or shouting
subtype: leash__tether__lead restraint consisting of a rope (or light chain) used to restrain an animal
subtype: ignition_lock__lock a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key
subtype: safety_belt__life_belt__safety_harness belt attaching you to some object as a restraint in order to prevent you from getting hurt
subtype: seat_belt a safety belt used in a car or plane to hold you in your seat in case of an accident
subtype: sea_anchor__seaanchor__drogue restraint consisting of a canvas covered frame that floats behind a vessel; prevents drifting or maintains the heading into a wind
subtype: trammels__shackle__hamper a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)
subtype: ball_and_chain heavy iron ball attached to a prisoner by a chain
subtype: fetter__hobble a shackle for the ankles or feet
subtype: trammel a fetter that is used to teach a horse to amble
subtype: handcuffs__handcuff__handcuff__cuffs__cuff__cuff__handlock__manacle shackle that consists of a metal loop that can be locked around the wrist; usually used in pairs
subtype: irons__iron__iron__chain__chains metal shackles; for hands or legs
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