union jack

The phrase "Union Jack" refers to the national flag of the United Kingdom. It is a combination of the flags of England, Scotland, and Northern Ireland. The design consists of a diagonal red cross on a white background (representing the flag of St George for England), combined with a diagonal white cross on a blue background (representing the flag of St Andrew for Scotland), and a red diagonal cross on a white background with a red hand in the center (representing the flag of St Patrick for Northern Ireland). This flag represents the unity and combination of these nations within the UK.