Noun
The flag of the United Kingdom, consisting of the flags of England (St. George's Cross), Scotland (St. Andrew's Cross), and Ireland (St. Patrick's Cross) now only used in Northern Ireland combined.
(by extension) The British Empire.
(nautical, Britain) The flag, consisting of the flags of England, Scotland, and Northern Ireland combined, flown on ships of the government of the United Kingdom. US Union Jack
(nautical, US) The flag, consisting of the blue star-studded field in the corner of the national ensign, flown at the jackstaff by ships at anchor.
Source: en.wiktionary.orgA lone demonstrator attempted to set fire to the Union Jack flag on The Cenotaph today as hundreds of protesters clashed with police officers during the anti-racism rally. Source: Internet
Brexit Party MEPs have left the European Parliament for the final time - carrying the Union Jack "home" to the UK. Source: Internet
He wears a Union Jack face mask and is a constant presence at the port in Dover, frequently live-streaming his confrontations with police and Border Force officials. Source: Internet
Previously, the standard used by Victorian governors after 1870 had been the Union Jack with the Badge of the State of Victoria emblazoned in the centre. Source: Internet
There are no Olympic Games this year in which Team GB members can sport the Union Jack while representing their country. Source: Internet
Barnes has mastered and implemented several methods to silently eliminate sentries with bladed weapons, garrotes or his bare hands, making him as lethal in his own way as his former Invader teammates, the Torches, Union Jack or Namor. Source: Internet