#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
  supertype:  #obstructor__obstruction__obstructer__impediment__impedimenta  any structure that makes progress difficult
  subtype:  #lever_tumbler  #pin.tumbler
  part of:  #lock.holdfast  a fastener fitted to a door or drawer to keep it firmly closed
     part of:  #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"
        part of:  #doorway__door__room_access__threshold  the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close; "he stuck his head in the doorway"
           part of:  #wall  an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure; "the south wall had a small window"; "the walls were covered with pictures"
              part of:  #edifice__building  a structure that has a roof and walls and stands more or less permanently in one place; "there was a three-story building on the corner"; "it was an imposing edifice"
              part of:  #hallway__hall  an interior passage or corridor onto which rooms open; "the elevators were at the end of the hall"
              part of:  #room  an area within a building enclosed by walls and floor and ceiling; "the rooms were very small but they had a nice view"
                 part of:  #edifice__building  a structure that has a roof and walls and stands more or less permanently in one place; "there was a three-story building on the corner"; "it was an imposing edifice"
     part of:  #drawer  a boxlike container in a piece of furniture; made so as to slide in and out
        part of:  #buffet.article_of_furniture__counter__sideboard  a piece of furniture that stands at the side of a dining room; has shelves and drawers
        part of:  #chest_of_drawers__chest__bureau__dresser  furniture with drawers for keeping clothes
        part of:  #chiffonier__commode  a tall elegant chest of drawers
        part of:  #desk  a piece of furniture with a writing surface and usually drawers or other compartments
     part of:  #gate  a door-like movable barrier in a fence or wall
     part of:  #lid  a movable top or cover (hinged or separate) for closing the opening of a container
        part of:  #box  a (usually rectangular) container; may have a lid; "he rummaged through a box of spare parts"
        part of:  #chest  box with a lid; used for storage; usually large and sturdy
        part of:  #jar  a vessel (usually cylindrical) with a wide mouth and without handles

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