/ Dictionary / Index F flashboard: Meaning and Definition of Find definitions for: flash•board Pronunciation: (flash'bôrd", -bōrd"), [key] — n. Civ. Engin. a board, or one of a series of boards, as on a milldam, used to increase the depth of the impounded water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: flashboard (Thesaurus) flashback flashbulb Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language