A formation of minerals, specifically:

A large hill or island having no vegetation.

(figuratively) Something that is strong, stable, and dependable; a person who provides security or support to another.

A lump or cube of ice.

(British, uncountable) A type of confectionery made from sugar in the shape of a stick, traditionally having some text running through its length.

(US, slang) A crystallized lump of crack cocaine.

(US, slang) An unintelligent person, especially one who repeats mistakes.

(South Africa, slang, derogatory) An Afrikaner.

(US poker slang) An extremely conservative player who is willing to play only the very strongest hands.

Any of several fish:

(US, basketball, slang) A basketball.

(US, baseball, slang) A mistake.

(curling) Synonym of stone.

(rock paper scissors) A closed hand (a handshape resembling a rock), that beats scissors and loses to paper. It beats lizard and loses to Spock in rock-paper-scissors-lizard-Spock.

(informal, cricket) A cricket ball, especially a new one that has not been softened by use

(CB radio slang) A crystal used to control the radio frequency.

To pelt with rocks; to stone.

(transitive and intransitive) To move gently back and forth.

(transitive) To cause to shake or sway violently.

(intransitive) To sway or tilt violently back and forth.

(transitive and intransitive, of ore etc.) To be washed and panned in a cradle or in a rocker.

(transitive) To disturb the emotional equilibrium of; to distress; to greatly impact (most often positively).

(intransitive) To do well or to be operating at high efficiency.

(intransitive, slang) To be very favourable or skilful; excel; be fantastic.

(slang, ambitransitive, euphemistic) To make love to or have sex (with).

An act of rocking; a rocking motion; a sway.

(music) A style of music characterized by basic drum-beat, generally 4/4 riffs, based on (usually electric) guitar, bass guitar, drums, keyboards (often), and vocals.

(intransitive) To play, perform, or enjoy rock music, especially with a lot of skill or energy.

(transitive) To thrill or excite, especially with rock music.

(intransitive) To have people dancing and enjoying rock music.

(transitive) To do something with excitement yet skillfully.

(transitive) To wear (a piece of clothing, outfit etc.) successfully or with style; to carry off (a particular look, style).

(countable) Distaff.

(uncountable) The flax or wool on a distaff.

Archaic form of roc (mythical bird).