DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   bitt
       n 1: a strong post (as on a wharf or quay or ship for attaching
            mooring lines); "the road was closed to vehicular traffic
            with bollards" [syn: bollard, bitt]
       v 1: secure with a bitt; "bitt the ship line"