/ Dictionary / Index L loach: Meaning and Definition of Find definitions for: loach Pronunciation: (lōch), [key] — n. any of several slender European and Asian fishes of the family Cobitidae and related families, having several barbels around the mouth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: loach (Thesaurus) lo load Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language