Definition of rock tripe
: any of various dark leathery umbilicate foliose lichens (as of the genus Umbilicaria) that are widely distributed on rocks in boreal and alpine areas and are sometimes used as food
First Known Use of rock tripe
Learn More about rock tripe
Britannica.com: Encyclopedia article about rock tripe
Seen and Heard
What made you want to look up rock tripe? Please tell us where you read or heard it (including the quote, if possible).