DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Snide \Snide\, a.
      1. Tricky; deceptive; contemptible; as, a snide lawyer; snide
         goods. [Slang, archaic]
         [1913 Webster]
      2. derogatory in an insinuating manner; as, a snide remark.
         [PJC] Snider rifle