Definitions

1. noun

a British soldier wearing a blue uniform, especially one of the English Civil War

“The bluecoats marched through the city, their blue uniforms a striking sight.”

2. noun

a volunteer soldier in the American Civil War who wore a blue uniform

“The bluecoats fought bravely at the Battle of Gettysburg.”

3. verb

to dress or be dressed in blue uniform, especially as a soldier

“The new recruits will bluecoat and parade through the city tomorrow.”