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union jack
union jacknouna 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.
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Union Jack
union jack
Americannoun
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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.
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(often initial capital letter) the British national flag.
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any flag the overall design of which is a union.
noun
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a common name for Union flag
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(often not capitals) a national flag flown at the jackstaff of a vessel
Etymology
Origin of union jack
First recorded in 1665–75
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.
See Examples For:
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
A growing number of St George's and union jack flags have appeared across England in recent months.
From BBC ● Nov. 3, 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
St George and union jack flags have been hung up in public places across several locations in England in recent weeks.
From BBC ● Aug. 29, 2025
This was soon accomplished; and giving him an union jack to hoist, at which he was much pleased, we bade him farewell.
From Borneo and the Indian Archipelago with drawings of costume and scenery by Frank Marryat
More than 1,000 people -- many waving Union Jack and England flags -- attended Tuesday's protest.
From Barron's ● Jun. 3, 2026
An enthusiastic fan of the Royal Family who was reportedly nicknamed "The Union Jack Man" by the late Queen Elizabeth II has died, aged 91.
From BBC ● May 10, 2026
Michelle Lumber later became aware of sirens across the road and went out to find her husband being treated by paramedics, with his ladder nearby and a Union Jack flag on a lamppost.
From BBC ● Jan. 22, 2026
The Union Jack waved in the night sky Thursday from one of the tallest heights of New York City.
From The Wall Street Journal ● Nov. 21, 2025
I stand on the mud mountain with my Union Jack hanging slack from its stick.
From "Cat's Eye" by Margaret Atwood
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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.