DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   vermin
       n 1: an irritating or obnoxious person [syn: vermin,
            varmint]
       2: any of various small animals or insects that are pests; e.g.
          cockroaches or rats; "cereals must be protected from mice and
          other vermin"; "he examined the child's head for vermin";
          "boys in the village have probably been shooting vermin"