Definition: The word "Brit" can refer to either the nationality or the country in which people are born in. The term Brit describes a person who is English or British, particularly those born or raised in England. It may also refer to the British monarchy or its members.
For instance, if someone says they were born in Britain and grew up in London, you might say "She was born in Britain but now lives in London." If they are an officer of the British Army, their title could be "Sir" or "Baron," depending on whether they represent the royal family or not.
Britain, British