DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   den
       n 1: the habitation of wild animals [syn: lair, den]
       2: a hiding place; usually a remote place used by outlaws [syn:
          hideout, hideaway, den]
       3: a unit of 8 to 10 cub scouts
       4: a room that is comfortable and secluded