a jack consisting of the union of a national flag or ensign, as the U.S. jack, which has the white stars and blue field of the union of the U.S. national flag.
(often initial capital letter) the British national flag.
any flag the overall design of which is a union.
a common name for Union flag
(often not capitals) a national flag flown at the jackstaff of a vessel
First recorded in 1665–75
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
More than 150 union jack flags will be displayed in 82 locations in Rushcliffe, Broxtowe, Bassetlaw, Newark, Mansfield, Ashfield and Gedling.
From BBC • Oct. 24, 2025
And confetti cannons rained glitter over him as the brass bombast of Land of Hope and Glory rang out and a giant union jack appeared on the screen behind him.
From BBC • Sep. 20, 2025
As protesters gathered outside the hotel again on Friday evening with banners and union jack and England flags, feelings on the High Street were mixed.
From BBC • Aug. 29, 2025
It gets to the heart of how many Britons' relationship with the union jack and the four nations' flags is complex.
From BBC • Aug. 23, 2025
It is then carried aft, and, being placed across the after-hatchway, the union jack is thrown over all.
From The Mirror of Literature, Amusement, and Instruction Volume 17, No. 488, May 7, 1831 by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
