Definition of new boy in US English:

new boy

noun

  • A schoolboy during his first term(s) at a school. Also (in extended use): a (young) man newly come into a given situation or social environment, a newcomer.

Origin

Mid 19th century; earliest use found in Charles Dickens (1812–1870), novelist. From new + boy [interjection].

Pronunciation

new boy

/ˈnjuː bɔɪ/