flag day

WordReference Random House Unabridged Dictionary of American English © 2026

flag′ day′, (sometimes caps.)[Brit.]

1. British Terms See tag day. 

• 1910–15

Flag′ Day′, 

1. American History June 14, the anniversary of the day (June 14, 1777) when Congress adopted the Stars and Stripes as the national flag of the United States.

Collins Concise English Dictionary © HarperCollins Publishers::

flag day noun

1. a day on which money is collected by a charity and small flags, emblems, or stickers are given to contributors