- One who rocks; specifically, one who rocks a cradle. - One of the curving pieces of wood or metal on which a
cradle, chair, etc., rocks. - 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. - A play horse on rockers; a rocking-horse. - A chair mounted on rockers; a rocking-chair. - A skate with a curved blade, somewhat resembling in shape
the rocker of a cradle. - Same as Rock shaft.