#pen  a writing implement with a point from which ink flows
  supertype:  writing_implement__writingimplement  an implement that is used to write
  part:  point.end
  subtype:  ballpoint_pen__ballpointpen__ballpoint__ballpen__Biro  a pen that has a small metal ball as the point of transfer of ink to paper
  subtype:  felt-tip_pen__felt-tipped_pen__felt_tip__Magic_Marker  a pen with a writing tip made of felt (trade name Magic Marker)
  subtype:  fountain_pen  a pen that is supplied with ink from a reservoir in its barrel
  subtype:  quill_pen__quillpen__quill  pen made from a bird's feather

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