(slang) A broken shard of ceramic spark plug, used by criminals to silently fracture the glass windows of vehicles.

plural of rock bass

Any fish of the genus Ambloplites, especially of the species Ambloplites rupestris and Ambloplites constellatus. / Epinephelus analogus spotted grouper) / Epinephelus labriformis (starry grouper)

plural of rock star

Synonym of spring rider

A series of sandstones which lie at the boundary of the Coal Measures with the underlying Marros Group in South Wales.

(landscaping) Synonym of rockery / (cycling) A rock-strewn path, part of a mountain biking racecourse

plural of rock garden

plural of rocking horse

(slang) A penis.