WordReference Random House Unabridged Dictionary of American English © 2026
clar•ain
(klâr′ān),USA pronunciation n.
- Mining, Mineralogythe coal forming the bright layers in banded bituminous coal. Cf. durain, vitrain.
- Latin clār(us) clear, bright + French -ain, as in durain
- 1915–20
'clarain' also found in these entries (note: many are not synonyms or translations):