/ Dictionary / Index B Brains Trust: Meaning and Definition of Find definitions for: Brains' Trust" Pronunciation: [key] — Brit. (sometimes l.c.)Brit. See a panel of experts on radio or television, giving impromptu answers to selected questions from the listening audience. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. brainstorming brainteaser 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