The mineral alunite.

(music) A genre of rock music that is normally published on independent labels, comprising of many different subgenres, mostly distinguished by the prevalence of thick and distorted guitar music.

The sport of scaling rock faces, either with or without ropes and other equipment.

(uncountable) Rock that is carved in situ. / Any of various dwarf succulent plants that resemble stones. / Pyura chilensis, a tunicate that resembles a mass of organs inside a rock.

The science that studies the mechanical behaviour of rock.

(dated) naphtha

(music) A musical genre combining elements of pop music and rock music.

(music) A rock music genre marked by a heavy regular beat, high amplification, and usually frenzied performances.

The rock dove, Columba livia. / (Africa) The speckled pigeon, Columba guinea, or African rock pigeon. / (Australia) The chestnut-quilled rock pigeon, Petrophassa rufipennis.

plural of rock pigeon