blue peter

noun
blue pe·​ter | \ˈblü-ˈpē-tər \

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

Examples of blue peter in a Sentence

Recent Examples on the Web

In any case, Mrs. Obama, who was wearing a deep blue Peter Pilotto dress for the unveiling, seemed to like her portrait. Maria Puente, USA TODAY, "Michelle Obama wears striking Milly gown in her official portrait," 12 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blue peter.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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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