#gate  a door-like movable barrier in a fence or wall
  supertype:  #movable_barrier__movablebarrier  a barrier that can be moved to allow passage
  subtype:  #head_gate  #lock-gate  #lychgate  #portcullis  #postern  #tailgate  #tail_gate  #tollgate  #turnpike  #turnstile  #wicket_door
  instance:  #Dipylon_gate
  part:  #flexible_joint__hinge  a joint that holds two parts together so that one can swing relative to the other
     part:  #pintle  a pin or bolt forming the pivot of a hinge
  part:  #lock.holdfast  a fastener fitted to a door or drawer to keep it firmly closed
     part:  #deadbolt__bolt  the part of a lock that is engaged or withdrawn with a key
     part:  #keyhole  the hole where a key is inserted
     part:  #tumbler.obstructor  a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown

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