I. ˈchəm noun
Etymology: perhaps by shortening & alteration from chamber fellow roommate
Date: 1684
: a close friend : pal
• chum·ship -ˌship noun
II. intransitive verb
( chummed ; chum·ming )
Date: 1730
1. : to room together
2.
a. : to be a close friend
b. : to show affable friendliness
III. noun
Etymology: origin unknown
Date: 1857
: animal or vegetable matter (as chopped fish or corn) thrown overboard to attract fish
IV. verb
( chummed ; chum·ming )
Date: 1857
transitive verb
: to attract with chum
intransitive verb
: to throw chum overboard to attract fish
V. noun
Etymology: Chinook Jargon cəm spotted, striped, from Lower Chinook c̓ə́m variegated
Date: 1902
: chum salmon