1. Madagascan roller with terrestrial and crepuscular habits that feeds on e.g. insects and worms;
The Collaborative International Dictionary of English v.0.48:
10. (Zool.) Any species of small ground snakes of the family
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.
WordNet (r) 3.0 (2006):
n 1: Madagascan roller with terrestrial and crepuscular habits
that feeds on e.g. insects and worms