/ Dictionary / Index B blue peter: Meaning and Definition of Find definitions for: blue' pe'ter Pronunciation: [key] — Naut. Naut. a blue flag with a white square in the center, designating the letter P in the International Code of Signals, flown by a vessel in port to indicate its imminent departure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blue-pencil blue phlox Related Content Daily Word Quiz: copious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language