/ Dictionary / Index R reserved power: Meaning and Definition of Find definitions for: reserved' pow'er Pronunciation: [key] a political power that a constitution reserves exclusively to the jurisdiction of a particular political authority. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. reserved reserve officer Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language