blue flag



any North American plant of the genus Iris, especially I. versicolor: the state flower of Tennessee.

Nearby words

  1. blue dogwood,
  2. blue dome cyst,
  3. blue duck,
  4. blue ensign,
  5. blue false indigo,
  6. blue flash,
  7. blue flu,
  8. blue fox,
  9. blue funk,
  10. blue funk, in a

Origin of blue flag

An Americanism dating back to 1775–85 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for blue flag

  • 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


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