- a person who rocks a cradle, etc.
- either of the curved pieces on the bottom of a cradle, rocking chair, etc.
- rocking chair
- a cradle for washing sand or gravel in gold mining
- a small steel plate with a toothed and curved edge, for roughening and thus preparing the surface of a mezzotint plate
- one of the curved stripes below the chevron of a noncommissioned officer above sergeant
- a performer, fan, etc. of rock music
- a rock song performed with a heavily accented rhythm at a fast tempo
off one's rocker
Slang crazy; insane
- One that rocks, as:a. A rocking chair.b. A rocking horse.
- One of the two curved pieces upon which a cradle, rocking chair, or similar device rocks.
- A cradle used for washing or panning ores.
- A small curved blade with a toothed edge used in mezzotint engraving to roughen the surface of the metal plate.
- An object having a curved form, as the keel of a ship or a skate blade sharpened in a curve.
- A curved stripe at the bottom part of a chevron worn by noncommissioned officers above the rank of sergeant.
- Music a. A rock song, singer, or musician.b. A fan of rock music.
- A curved piece of wood attached to the bottom of a rocking chair or cradle that enables it to rock back and forth.
- Hence, a rocking chair
- (surfing) The lengthwise curvature of a surfboard. (More rocker is a more curved board.)
- All modern surfboards share a similar rocker design — Bruce Jones 
- Someone passionate about rock music.
- A musician who plays rock music
- One who rocks something.
- (UK) A member of a British subculture of the 1960s, opposed to the mods, who dressed in black leather and were interested in 1950s music.
- Any implement or machine working with a rocking motion, such as a trough mounted on rockers for separating gold dust from gravel, etc., by agitation in water.
- A rocking horse.
- A skate with a curved blade, somewhat resembling in shape the rocker of a cradle.
- (engineering) A rock shaft.
- corker, recork