/ Dictionary / Index P pilotless aircraft: Meaning and Definition of Find definitions for: pi'lotless air'craft Pronunciation: [key] an aircraft equipped for operation by radio or by robot control, without a human pilot aboard; drone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pilotless pilotless ignition Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language