DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   cotter
       n 1: a peasant farmer in the Scottish Highlands [syn: cotter,
            cottar]
       2: a medieval English villein [syn: cotter, cottier]
       3: fastener consisting of a wedge or pin inserted through a slot
          to hold two other pieces together [syn: cotter, cottar]