#swing_door__swingdoor__swinging_door  a door that swings on a double hinge; opens in either direction
  supertype:  door  a swinging or sliding barrier that will close the entrance to a room or building; "he knocked on the door"; "he slammed the door as he left"
  subtype:  batwing  one of a pair of swinging doors (as at the entrance to a western saloon)
  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:  paneling__panelling__pane  a panel or section of panels in a wall or door

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