A jack, or flag, consisting only of a union, esp. of the union of a national flag.
(proper) The national flag of the United Kingdom.
Union-jack Sentence Examples
On the 27th of the same month Farewell hoisted the Union Jack at the port and declared the territory he had acquired a British possession.
A club for soldiers, sailors and marines in London, called the Union Jack Club, was opened in Waterloo Road by King Edward VII.
On Prospect Hill on the, 8th of July 1775 Israel Putnam raised the "Appeal to Heaven" flag, and here also is said to have been raised on the 1st of January 1776 one of the earliest of the Continental standards, the Union Jack and Stripes.
The transference of influence from the company to the government was officially effected on the 1st of January 1900, on which day the Union Jack was hoisted at Lokoja, and the Northern Nigeria formation of a local administration was entered upon.
The rest of the city is in squares, the streets forming the design of the union jack.