The Collaborative International Dictionary of English v.0.48:



   10. (Zool.) Any species of small ground snakes of the family
       Tortricidae.
       [1913 Webster]

   Ground roller (Zool.), 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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ground roller
    n 1: Madagascan roller with terrestrial and crepuscular habits
         that feeds on e.g. insects and worms