/ Dictionary / Index P power train: Meaning and Definition of Find definitions for: pow'er train" Pronunciation: [key] a train of gears and shafting transmitting power from an engine, motor, etc., to a mechanism being driven. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. power tool Powhatan Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language