/ Dictionary / Index P pilot raise: Meaning and Definition of Find definitions for: pi'lot raise" Pronunciation: [key] — Mining. Mining. a small raise intended to be enlarged later. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pilot plant pilot signal Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language