Source : Webster's Revised Unabridged Dictionary (1913)

   10. (Zo["o]l.) Any species of small ground snakes of the
       family {Tortricid[ae]}.

   {Ground roller} (Zo["o]l.), any one of several species of
      Madagascar rollers belonging to {Atelornis} and allied
      genera. They are nocturnal birds, and feed on the ground.
      

   {Roller bolt}, the bar in a carriage to which the traces are
      attached; a whiffletree. [Eng.]

   {Roller gin}, a cotton gin inn which rolls are used for
      separating the seeds from the fiber.

   {Roller mill}. See under {Mill}.

   {Roller skate}, a skate which has small wheels in the place
      of the metallic runner; -- designed for use in skating
      upon a smooth, hard surface, other than ice.

Source : WordNet®

ground roller
     n : Madagascan roller with terrestrial and crepuscular habits
         that feeds on e.g. insects and worms