Bluecoat

Origin

blue + coat

Full definition of bluecoat

Noun

1. (British) A traditional dress code at certain prestigious British schoolsThis was a bluecoat school in my day.
2. (US history) A soldier or officer in the Union army during the American Civil War
• The shot wounded Thomas Lord, a 73-year-old former New York City police officer from Suffolk, Va., and a bluecoat with the Seventh New York Volunteer Cavalry.
3. (dated) A policeman
• "The offices are up those steps," said the bluecoat.