DCHP-1 Online
rock moss Hist. 
an edible lichen of the genus, Umbilicaria (or, less often, the genus Gyrophora), having circular, leathery, grayto-brownish thalli found attached to certain rocks by a threadlike holdfast.
See also: rock-tripe
- 1801 Its chief vegetable substance is the moss, on which the deer feed; and a kind of rock moss, which, in times of scarcity, preserves the lives of the natives.
- 1957 He also had tripe-de-roche or rock moss, which some Indians boiled and ate with relish but which David thought tasted exactly like rock moss.
- 1801 Its chief vegetable substance is the moss, on which the deer feed; and a kind of rock moss, which, in times of scarcity, preserves the lives of the natives.