Blue Peter Definition
noun
A blue signal flag with a white square in the center, flown by a merchant ship to show it is ready to sail.
Webster's New World
Wiktionary
Other Word Forms of Blue Peter
Noun
Singular:
blue peter
Plural:
blue petersOrigin of Blue Peter
From the fact that it represents the letter P in the International Code of Symbols
From American Heritage Dictionary of the English Language, 5th Edition
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