Shaking, swaying or moving back and forth. / (informal) Excellent; great.

present participle of rock

The motion of something that rocks. / The abrading of a copper plate with a rocker, preparatory to mezzotinting. / The motion by which the design on a steel mill is transferred to a copper cylinder.

plural of rocking

(uncountable) The naturally occurring aggregate of solid mineral matter that constitutes a significant part of the earth's crust. / A mass of stone projecting out of the ground or water.

(countable) Distaff. / (uncountable) The flax or wool on a distaff.

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

(intransitive) To play, perform, or enjoy rock music, especially with a lot of skill or energy. / (intransitive, slang) To be very favourable or skilful; excel; be fantastic.

Archaic form of roc (mythical bird)

(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.