DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   chaser
       n 1: a person who is pursuing and trying to overtake or capture;
            "always before he had been able to outwit his pursuers"
            [syn: pursuer, chaser]
       2: a drink to follow immediately after another drink