/ Dictionary / Index T top brass: Meaning and Definition of Find definitions for: top' brass' Pronunciation: [key] — Informal. Informal. brass (def. 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. top boot topcastle Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language