/ Dictionary / Index P pilot biscuit: Meaning and Definition of Find definitions for: pi'lot bis"cuit Pronunciation: [key] hardtack. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pilot balloon pilot boat Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language