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  • green flag
    green flag
    noun
    (in automobile racing) a green-colored flag that is used to signal the start of a race.
  • Green Flag
    Green Flag
    noun
    an award given to a bathing beach that meets EU standards of cleanliness

green flag

American  

noun

  1. (in automobile racing) a green-colored flag that is used to signal the start of a race.


Green Flag British  

noun

  1. an award given to a bathing beach that meets EU standards of cleanliness

"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

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 PEG ratio for tech is now below that of the global aggregate market, another green flag for budding “valuation opportunities.”

From MarketWatch • Apr. 7, 2026

Each year, Bani Walid celebrates the anniversary of a 1969 coup that brought Gaddafi to power, with people parading through the streets with portraits of the ex-leader and Libya's green flag from before the revolt.

From Barron's • Feb. 6, 2026

One of the most controversial aspects of Tea is that it allows women to share information on men they have dated to "avoid red flags" but also highlight those with "green flag" qualities.

From BBC • Jul. 30, 2025

Carrying the red, white and green flag was a nod to them and their sacrifices, she said.

From Los Angeles Times • Jun. 13, 2025

So my plan is: Head south four kilometers, then search around till I see the green flag.

From "The Martian" by Andy Weir