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blue flag

See more synonyms for blue flag on Thesaurus.com
noun
  1. any North American plant of the genus Iris, especially I. versicolor: the state flower of Tennessee.
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Origin of blue flag

An Americanism dating back to 1775–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for blue flag

Historical Examples

  • Here are calamus patches, and alder thickets, and sedges without number; and the prickly carex and blue-flag abound on every side.

    Pastoral Days

    William Hamilton Gibson


British Dictionary definitions for blue flag

Blue Flag

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