/ Dictionary / Index M motor pool: Meaning and Definition of Find definitions for: mo'tor pool" Pronunciation: [key] a standby fleet of motor vehicles available for temporary use by appropriate personnel, as at a military or governmental installation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. motor neuron motor root Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language