- any lichen of the genus Umbilicaria.
Origin of rock tripe
Examples from the Web for rock tripe
Historical Examples of rock tripe
On reaching the rock, they saw what Norman had meant by the words tripe de roche (rock-tripe).
Not even a bit of rock-tripe—in these parts the last resource of starving men—could be met with.
There was one cable Burl had missed, hidden by rock-tripe and mould in a depressed part of the cliff-top.The Forgotten Planet
- 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