#loop.round_shape  anything with a round or oval shape (formed by a line or cord etc.) that is closed or nearly closed
  supertype:  #round_shape__roundshape  a shape that is curved and without sharp angles
  subtype:  #belt.loop  endless loop of flexible material between two rotating shafts or pulleys
     subtype:  #caterpillar_tread__caterpillartread__caterpillar_tracks  a belt around wheels to grip rough ground
        subtype:  #half_track  caterpillar tread goes around only rear wheels
     subtype:  #conveyer_belt__conveyor_belt__conveyer__conveyor__transporter  a moving belt that transports objects (as in a factory)
        subtype:  #luggage_carousel__luggagecarousel__carousel__carrousel__luggagecarrousel  carries luggage to air travelers
     subtype:  #driving_belt__drivingbelt  a belt that carries motion from a motor to the machinery
     subtype:  #fan_belt__fanbelt  a belt driven by the crankshaft that drives a fan that pulls air through the radiator
  subtype:  #running_noose__runningnoose__noose__slip_noose  a loop formed in a cord or rope by means of a slipknot; it binds tighter as the cord or rope is pulled
     subtype:  #clench__clinch  a small slip noose made with seizing
        subtype:  #double_clinch  a clinch with two loops
        subtype:  #inside_clinch  a clinch with the end of the line inside the loop
        subtype:  #outside_clinch__outsideclinch  a clinch with the end of the line outside the loop
  subtype:  #lobe.loop  the enhanced response of an antenna in a given direction as indicated by a loop in its radiation pattern
     subtype:  #major_lobe__majorlobe  the maximum lobe in the radiation pattern which is intended to be along the forward axis and which gives the effect of a beam
  subtype:  #bight.loop  a loop in a rope

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