Union flag(redirected from Ynion jack)
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(Government, Politics & Diplomacy) the national flag of the United Kingdom, being a composite design composed of St George's Cross (England), Saint Andrew's Cross (Scotland), and Saint Patrick's Cross (Ireland). Often called: Union Jack
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014