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.
People of all ages carried the union jack and took photographs of the King.
From BBC • May 1, 2026
Geri Halliwell's union jack flag platform boots are also among items featuring in the free exhibition at the Barbican Music Library, along with Liam Gallagher's tambourine and a Brit Award.
From BBC • Apr. 16, 2026
Nottinghamshire County Council has said it is "extremely disappointed" after one of its union jack flag banners was vandalised in Newark.
From BBC • Jan. 7, 2026
The Reform UK-led authority's £75,000 project started in December, with 164 union jack flags being fixed to lamp-posts in 82 areas across Nottinghamshire.
From BBC • Jan. 7, 2026
At one o'clock we set out in the barge, with a large union jack flying, and as it blew fresh, we soon reached the harbour.
From Account of a Voyage of Discovery to the West Coast of Corea, and the Great Loo-Choo Island by Hall, Basil
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.
