blue peter

noun
blue pe·​ter | \ ˈblü-ˈpē-tər How to pronounce blue peter (audio) \

Definition of blue peter

: a blue signal flag with a white square in the center used to indicate that a merchant vessel is ready to sail

First Known Use of blue peter

1802, in the meaning defined above

History and Etymology for blue peter

probably from the name Peter

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The first known use of blue peter was in 1802

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Dictionary Entries Near blue peter

blue perch

blue peter

blue phlox

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Cite this Entry

“Blue peter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blue%20peter. Accessed 25 Sep. 2021.

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Britannica.com: Encyclopedia article about blue peter

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