any lichen of the genus Umbilicaria.
(Canadian) any of various edible lichens, esp of the genus Umbilicaria, that grow on rocks and are used in the North as a survival food
[rok-yuh-men-tuh-ree] /ˌrɒk yəˈmɛn tə ri/ noun 1. a documentary about rock music.
- Rock up
verb 1. (intransitive, adverb) (informal) to arrive late or unannounced
noun 1. a city in central Maryland.
noun 1. a city on W Long Island, in SE New York.