#top.covering  covering for a hole (especially a hole in the top of a container); "he removed the top of the carton"; "he couldn't get the top off of the bottle"; "put the cover back on the kettle"
  supertype:  covering.artifact  an artifact that cover something else (usually to protect or shelter or conceal it)
  subtype:  cap.top  a top (as for a bottle)
     subtype:  bottlecap  a cap that seals a bottle
     subtype:  radiator_cap  cap on the opening in the top of a radiator through which a coolant liquid can be added
  subtype:  lid  a movable top or cover (hinged or separate) for closing the opening of a container
     subtype:  trunk_lid__trunklid  hinged lid for a trunk
  subtype:  manhole_cover__manholecover  a flush iron cover for a manhole (as in a street)
  subtype:  screwtop  the top of a container that must be screwed off and on

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