#manhole_cover__manholecover  a flush iron cover for a manhole (as in a street)
  supertype:  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"
  part of:  manhole  a hole (usually with a flush cover) through which a person can gain access to an underground structure

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