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  • blue flag
    blue flag
    noun
    any North American plant of the genus Iris, especially I. versicolor : the state flower of Tennessee.
  • Blue Flag
    Blue Flag
    noun
    an award given to a seaside resort that meets EU standards of cleanliness of beaches and purity of water in bathing areas

blue flag

American  

noun

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


Blue Flag British  

noun

  1. 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

Etymology

Origin of blue flag

An Americanism dating back to 1775–85

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The drone feed shows the moment they briefly wave their yellow and blue flag, before quickly returning to cover.

From BBC • Dec. 9, 2025

Thursday’s summit was earlier disturbed when Ukrainian delegates interrupted a speech to the assembly by Timofeeva, waving Ukraine’s yellow and blue flag by her side as she spoke.

From Seattle Times • May 5, 2023

At the protests, Millaray would rap or stroll among protesters with her hand-painted blue flag bearing the “Wünelfe,” an eight-point star sacred in Mapuche iconography.

From New York Times • Jan. 27, 2023

In each spot where they did, he bent down and planted a little blue flag and said that’s where I’d likely find my bad pipe.

From Los Angeles Times • Jul. 13, 2022

The taxi stopped in front of the embassy and the driver pointed to the green, white, and blue flag to make sure that I was at the right place.

From "A Long Way Gone: Memoirs of a Boy Soldier" by Ishmael Beah

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