crottle

noun

crot·​tle

variants or less commonly crottal or crotal

ˈkrätᵊl

plural -s

Scottish

: any of several lichens from which dyes are made

especially : a member of the genus Parmelia that yields reddish brown or purple dye

—often used in plural

Word History

Etymology

Scottish Gaelic crotal; akin to Irish Gaelic crotal kernel, rind, crottle

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