DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   Decker
       n 1: English dramatist and pamphleteer (1572-1632) [syn:
            Dekker, Decker, Thomas Dekker, Thomas Decker]
       2: (often used in combinations) something constructed with
          multiple levels; "they rode in a double-decker bus"