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pilot flag

noun
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Definition of pilot flag

: a flag hoisted at the fore by a ship desiring a pilot (as the union jack in the U.S., the British union jack with a white border in Great Britain)

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“Pilot flag.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pilot%20flag. Accessed 22 Jun. 2021.

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