Definition of blue boy in English:

blue boy

noun

  • 1historical Any of various boys or men who wear blue clothing, or a blue uniform, livery, etc.; especially a boy who attends a blue coat school or similar charitable institution (now chiefly historical).

  • 2slang Slang. A policeman. Also as a nickname. Usually in plural Compare "boys in blue".

Origin

Mid 17th century; earliest use found in William Davenant (1606–1668), poet, playwright, and theatre manager. From blue + boy.

Pronunciation

blue boy

/ˈbluː bɔɪ/