ALL meanings of rock tripe
rock tripe
R r - noun rock tripe any lichen of the genus Umbilicaria. 1
- noun rock tripe any of various edible lichens, esp of the genus Umbilicaria, that grow on rocks and are used in the North as a survival food 0
- noun rock tripe any of a genus (Umbilicaria) of large lichens, green on top and black beneath, attached to a rock surface 0