/ Dictionary / Index P pilotweed: Meaning and Definition of Find definitions for: pi•lot•weed Pronunciation: (pī'lut-wēd"), [key] — n. the compass plant, Silphium laciniatum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pilot waters pilot whale 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