Union Jack
Commonly used but incorrect name for the Union Flag of the United Kingdom.
It should only be called the Union Jack when being flown at sea.
When flying from a flagpole on land "Union Flag"
When flying from part of a boat at sea "Union Jack"
Synonyms for Union Jack
On this page, you will find 30 slang terms related to Union Jack. Some of the top words include: Olde America, Jeck, Spaf, United Kingdom of Great Britain and Northern Ireland, sea monkeys, and 25 more.