(chemistry) A dibasic acid, C₁₇H₃₂O₄, of the oxalic series, found in archil (Roccella tinctoria, etc.), and other lichens.

plural of rock tripe

An edible lichen of the genus Umbilicaria that grows on rocks.

(informal) Indulgent and pleasurable activities.

An Irish and French surname from Anglo-Norman of Norman origin. / A village and civil parish in Cornwall, England (OS grid ref SW9860).

Artificial rockwork made of rough stones and cement, as for gardens. / The rococo system of scroll ornament, based in part on the forms of shells and water-worn rocks. / A seed bead.

plural of rocaille

A rock music genre, typically with significant use of the ukulele.

(ufology) Any of the rocket- or missile-shaped unidentified flying objects sighted in 1946, mostly in Sweden and nearby countries.

plural of rock cake