/ Dictionary / Index B by-plot: Meaning and Definition of Find definitions for: by-plot Pronunciation: (bī'plot"), [key] — n. subplot. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. by-play by-product 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