verb. to chit chat or talk friendly with another person.
also to mingle in a crowd, to kind of suck up (brown nose) with another. Usually at awkward church functions.
"Hey, where have you been?"
"I was over there chum-chumming with the Smiths. They are so weird."
by toasterheadtil September 17, 2008
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menstruating, the monthly act of vaginal bleeding
Don't go swimming in the ocean when you're chumming.
by Spider420 September 15, 2005
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Burnt out, tired, wasted, or just not motivated to do anything.
My friends wanted to me to go hiking but after snowboarding the previous day I was way to chummed for that.

After drinking way too much the night before I was so chummed I just hung out on the couch most of the day.
by Brf June 19, 2006
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A jolly fellow who is your mate for life. A pal brought to you by fate who you will be best friends with for eternity.
“I was feeling really down until I met my chum
Oh cool, what is he like?”
“He’s my pal forever”
by Sweetcheex December 31, 2019
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Used by Edinburghian's (people from Edinburgh, Scotland). It means to accompany someone somewhere.
William will you chum me up to my house? Meaning William will you accompany me up to my house?
by DylanJohnRitchie August 7, 2009
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The short form of "chumleg," referring to the penis. As the penis is also usually its owner's best friend, the friendliness implied by "chum" makes the term that much more appropriate.
"I showed her my chum last night. She seemed impressed."

"Goddamn my chum is rashy... I hope I didn't catch anything."

"That fudgepacker tried to grab my chum in the showers after the game! What an asshole!"
by Gorshinspew September 18, 2011
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