Chum

chum, n. a chamber-fellow: friend or a ociate, chiefly among schoolboys and students.— v.i. and v.t. to occupy, or to put one into, the same room with another.— n. Chum′mage , the quartering of two or more persons in one room: a fee demanded from a new chum.— adj. Chum′my , sociable.— n. a chimney-sweeper's boy: a chum. [Perh. a mutilation of Chamber-fellow .]