'New chum' definitions:

Definition of 'New chum'

From: GCIDE
  • Chum \Chum\ (ch[u^]m), n. [Perh. a contraction fr. comrade or chamber fellow: cf. also AS. cuma a comer, guest.] A roommate, especially in a college or university; an old and intimate friend. [1913 Webster]
  • New chum, a recent immigrant. [Australia] [Webster 1913 Suppl.]