bosom chum

(redirected from a bosom chum)

bosom chum

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.
See also: bosom, chum

bosom chums

and bosom friends
n. lice. The old guy sat there scratching at his bosom chums. My bosom friends keep me awake all night.
See also: bosom, chum