union jack

1. 1.

   national flag of the United Kingdom

   SynonymsUnion flag

   Broaderflag

Questions about union jack

What does union jack mean?

union jack means "national flag of the United Kingdom".

What is another word for union jack?

Close synonyms include Union flag. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is union jack a common word?

union jack is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.