/ Dictionary / Index R reserve bank: Meaning and Definition of Find definitions for: reserve' bank" Pronunciation: [key] one of the 12 principal banks of the U.S. Federal Reserve System. a bank authorized by a government to hold the reserves of other banks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. re-serve reserve buoyancy Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language