/ Dictionary / Index P power takeoff: Meaning and Definition of Find definitions for: pow'er take'off Pronunciation: [key] an accessory unit or apparatus attached to an engine-powered machine and powered by the engine. Abbr.: PTO Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. power supply power tool 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