DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   rowlock
       n 1: a holder attached to the gunwale of a boat that holds the
            oar in place and acts as a fulcrum for rowing [syn: peg,
            pin, thole, tholepin, rowlock, oarlock]