Rocker

·noun A play horse on rockers; a rocking-horse.

II. Rocker ·noun A chair mounted on rockers; a rocking-chair.

III. Rocker ·noun One who rocks; specifically, one who rocks a cradle.

IV. Rocker ·noun ·same·as Rock shaft.

V. Rocker ·noun A skate with a curved blade, somewhat resembling in shape the rocker of a cradle.

VI. Rocker ·noun One of the curving pieces of wood or metal on which a cradle, chair, ·etc., rocks.

VII. Rocker ·noun Any implement or machine working with a rocking motion, as a trough mounted on rockers for separating gold dust from gravel, ·etc., by agitation in water.