/ Dictionary / Index T taproot: Meaning and Definition of Find definitions for: tap•root Pronunciation: (tap'rt", -root"), [key] — n. Bot. a main root descending downward from the radicle and giving off small lateral roots. See illus. under. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: taproot (Thesaurus) taproom taps Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language