10. (Zoöl.)
Defn: Any species of small ground snakes of the family Tortricidæ. Ground roller (Zoöl.), 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.
ROLLER BEARING
Roll"er bear"ing. (Mach.)
Defn: A bearing containing friction rollers.
ROLLER COASTER
Roller coaster.
Defn: An amusement railroad in which cars coast by gravity over a long winding track, with steep pitches and ascents.
ROLLEY
Rol"ley, n. Etym: [Probably fr. roll.]
Defn: A small wagon used for the underground work of a mine.
Tomlison.
ROLLIC
Rol"lic, v. i. [imp. & p. p. Rollicked ; p. pr. & vb. n. Rollicking.]
Etym: [Corrupt. fr. frolic, under the influence of roll.]
Defn: To move or play in a careless, swaggering manner, with a
frolicsome air; to frolic; to sport; commonly in the form rollicking.
[Colloq.]
He described his friends as rollicking blades. T. Hook.