DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   pen
       n 1: a writing implement with a point from which ink flows
       2: an enclosure for confining livestock
       3: a portable enclosure in which babies may be left to play
          [syn: playpen, pen]
       4: a correctional institution for those convicted of major
          crimes [syn: penitentiary, pen]
       5: female swan
       v 1: produce a literary work; "She composed a poem"; "He wrote
            four novels" [syn: write, compose, pen, indite]