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blue flag

any North American plant of the genus Iris, especially I. versicolor : the state flower of Tennessee.
Origin of blue flag
An Americanism dating back to 1775-85 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for blue flag
Historical Examples
  • A blue flag so called; it gives notice that the ship is about to sail.

    Ben Hadden W.H.G. Kingston
  • The Counts of Anjou claimed the right to take this blue flag to battle with them.

    The Flags of the World

    F. Edward Hulme
  • As they passed one of the cars they both recognized a girl with a blue flag.

    Harvard Stories Waldron Kintzing Post
  • It unrolled—a blue flag, bearing the name "Valeria" in white letters.

    The Open Question Elizabeth Robins
  • She stood in the door with her apron flying out in the wind like a blue flag.

    Pembroke Mary E. Wilkins Freeman
  • He had set up his blue flag in the tap-room, and was teaching every one.

    Lorna Doone R. D. Blackmore
  • Many handsome perennials, of which the blue flag is familiar to every old-fashioned garden.

  • Native chiefs voluntarily offered their territories, and united under the blue flag with the golden star.

  • And now to-day, of all days, this blue flag comes out of hiding and goes flaunting along the floor!

    The Open Question Elizabeth Robins
  • Plunging into the soft and marshy ground before me, I fixed my eye upon the blue flag which marked the course.

    Jack Hinton Charles James Lever
British Dictionary definitions for blue flag

Blue Flag

an award given to a seaside resort that meets EU standards of cleanliness of beaches and purity of water in bathing areas
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
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