ROCKER

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

2. rocker ·noun a chair mounted on rockers; a rocking-chair.

3. rocker ·noun one who rocks; specifically, one who rocks a cradle.

4. rocker ·noun ·same·as rock shaft.

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

6. rocker ·noun one of the curving pieces of wood or metal on which a cradle, chair, ·etc., rocks.

7. 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.