Definition of new jack in English:

new jack

noun

  • 1Chiefly US slang (especially in African-American usage). A newcomer, a recent arrival, a novice; especially one who is a member of a street gang or involved in criminal activities.

  • 2Originally US= new jack swing.

adjective

  • Of or relating to novice gang members or their related subculture.

Origin

1940s (in an earlier sense). From new + Jack.

Pronunciation

new jack

/ˈnjuː dʒak/