Chum /(chŭm)/

Chum

n.
  1. A roommate, especially in a college or university; an old and intimate friend.

Phrases & Compounds
New chum
a recent immigrant.

Chum

v. i.

imp. p. p. Chummed; p. pr. & vb. n. Chumming

  1. To occupy a chamber with another; as, to chum together at college. [U. S.]

Chum

n.
  1. Chopped pieces of fish used as bait. [U. S.]