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Related to chum: chum salmon
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1. One's close or closest friend; a friend one holds dear to one's heart. We grew up right next door to each other, so we have been bosom chums since we were kids.
2. Lice on one's body. Ugh, I'm so itchy—I really hope my bosom chums aren't back.
vulgar slang A derogatory term for a homosexual man's boyfriend or partner.
To be friendly with someone. Why is Patrick chumming up to me all of a sudden? He's usually so distant.
chum up to (one)
To be friendly with someone Why is Patrick chumming up to me all of a sudden? He's usually so distant.
chum up with (one)
To be friendly with someone Why is Patrick chumming up with me all of a sudden? He's usually so distant.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
chum up to someone
to try or seem to become friendly with someone. Todd chummed up to Martin. I don't want to have to chum up to anyone I don't want to work with.
chum up with someone
to become friendly with someone. He seems to have chummed up with Fred. Juan quickly chummed up with all the guys in his class.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
bosom chumsand bosom friends
n. lice. The old guy sat there scratching at his bosom chums. My bosom friends keep me awake all night.
n. a pal; a good friend. We’ve been chums for years. Went to college together.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.