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clarain

American

[klair-eyn] / ˈklɛər eɪn /

noun

the coal forming the bright layers in banded bituminous coal.

Etymology

Origin of clarain

1915–20; < Latin clār ( us ) clear, bright + French -ain, as in durain

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.