#base.underside  a flat bottom on which something is intended to sit; "a tub should sit on its own base"
  supertype:  #underside__bottom__undersurface  the lower side of anything
  part of:  #box  a (usually rectangular) container; may have a lid; "he rummaged through a box of spare parts"
  part of:  #lamp.article_of_furniture  a piece of furniture holding one or more electric light bulbs
  part of:  #vessel  an object used as a container (especially for liquids)

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