blue peter

noun Nautical.
  1. 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.

Origin of blue peter

First recorded in 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for blue peter

Historical Examples of blue peter


British Dictionary definitions for blue peter

blue peter

noun
  1. a signal flag of blue with a white square at the centre, displayed by a vessel about to leave port

Word Origin for blue peter

C19: from the name Peter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012