DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   sheep
       n 1: woolly usually horned ruminant mammal related to the goat
       2: a timid defenseless simpleton who is readily preyed upon
       3: a docile and vulnerable person who would rather follow than
          make an independent decision; "his students followed him like
          sheep"