Source : Webster's Revised Unabridged Dictionary (1913)

Rove \Rove\, n.
   The act of wandering; a ramble.

         In thy nocturnal rove one moment halt.   --Young.

   {Rove beetle} (Zo["o]l.), any one of numerous species of
      beetles of the family {Staphylinid[ae]}, having short
      elytra beneath which the wings are folded transversely.
      They are rapid runners, and seldom fly.

Source : WordNet®

rove beetle
     n : active beetle typically having predatory or scavenging
         habits