/ Dictionary / Index B by-play: Meaning and Definition of Find definitions for: by-play Pronunciation: (bī'plā"), [key] — n. an action or speech carried on to the side while the main action proceeds, esp. on the stage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: by-play (Thesaurus) by-path by-plot Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language