Definitions verb transitive ingrain
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
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Word OriginME engreinen < OFr engrainer, to dye scarlet < en- (see en-1) + graine, seed, cochineal dye; assoc. in both Fr & E with grain (texture): see grain