Chŭm1, n.
n. [Probably a contraction from comrade. Cf. also A-S. cuma, a comer, guest.] A chamber-fellow, especially in a college or university; one who lodges or resides in the same room.
2 entries under this word
Chum
Chüm2, v. i.
v. i. [From the noun.] To occupy a chamber with another; as, to chum together. [U. S.]