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
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“Rock tripe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock%20tripe. Accessed 27 Jun. 2022.
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Time Traveler for rock tripe
The first known use of rock tripe was in 1854
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