/ Dictionary / Index T trustbuster: Meaning and Definition of Find definitions for: trust•bust•er Pronunciation: (trust'bus"tur), [key] — n. a federal official who seeks to dissolve business trusts, esp. through vigorous application of antitrust regulations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trustbuster (Thesaurus) trust account trust company Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language