/ Dictionary / Index B beamish: Meaning and Definition of Find definitions for: beam•ish Pronunciation: (bē'mish), [key] — adj. bright, cheerful, and optimistic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: beamish (Thesaurus) beaming beam lights 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