(music) A broad genre of popular music, including especially those styles ultimately derived from rock and roll, employing electrical amplification, heavy use of guitars, 4/4 time with strong percussive rhythm on beats two and four (backbeat), and usually themes of bold wildness, rebellion, and sexuality.

(music) Any of several genres of rock music featuring electronic synthesizers

(simile) Extremely stable physically. / (simile) Extremely reliable.

Alternative spelling of rockbun

(mineralogy) The mineral halite. / Coarsely ground common salt.

A kind of tropical bird, of the genus Rupicola.

(mineralogy) sombrerite

Alternative form of rockrose

plural of rock rose

A medium-sized gamebird in the grouse family, Lagopus muta.