Emberiza cia, a passerine bird in the bunting family Emberizidae.

(British spelling) Rock or other suitable material used to protect shorelines, streambeds, bridge abutments, pilings and other structures against scour and water, wave, or ice erosion.

plural of rocker board

An item of exercising equipment which challenges the sportsman to balance his weight on it in one axis in which it could tilt.

Any of the wallabies of the genus Petrogale.

plural of rock-wallaby

A village and coastal rock formation in Ludgvan parish, Cornwall, England (OS grid ref SW4931). / Various other rock formations around the United Kingdom.

(informal psychology) The practice of deliberately making oneself uninteresting and unresponsive so as to defend oneself against a narcissist who wishes to elicit certain responses.

(geology) The background mineral material in which the object of study (crystals, fossils, specific minerals, groundwater, etc.) is embedded or through which it travels.

Alternative form of rock-wallaby