To severely mess up.
*context, playing warzone*
Fuck, I landed late. I chalked it.
by Guspacho March 27, 2020
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The expected outcome, especially in a sporting event. Derived from, "you can chalk that up right now, we don't even have to see it."
My NCAA sweet sixteen bracket was chalk.
by Steven Borbash April 11, 2005
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(noun) A theory regarding a mystery. Refers to the practice of chalkboarding/whiteboarding ideas and expanding on them.
(verb) To actively theorize about said mysteries. Often used when someone is coming up with tinfoil theories.
"Man, so men and my friends were chalking about who Rey's parents might be..."

"Did you hear the chalk about Sylar and Peter Petrelli?"

"After those first teasers dropped, it was crazy how much chalk was flying around about what was going to happen in season 3 of Westworld."
by Rawnie Phen October 31, 2020
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Military term for an aircraft load. More specifically a group of airborne soldiers which deploy from a single aircraft or platoon sized unit for air-assault operations.
"I'm placing you in charge of chalk #4, soldier!"
by brokenmyth July 18, 2009
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A derogatory term used for a 'dusty' guy, usually one lacking any wheels, or is just in general, someone who is very uncool.

This is a thinly concealed racist term, deriving from "Choc," a slang term for a black person.
"Adrianna's dating a complete chalk, you can definitely outwheel him."

"Look at those dusty chalks at the club hitting on those girls."

"Popped collar? What a chalk!
by balbir December 06, 2011
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To make cocaine into lines, to excess consumption of cocaine.
Person 1 - 'Dude, why are you giving me so much grief? You have been up and down all night like a tit in a trance'
Person 2- 'Sorry blud, nothing personal, I've been chalked up all night'
Person 1 - 'What does chalking mean?'
Person 2 - 'Look it up on urban dictionary'
Person 1 - 'They wouldn't have the balls to put that up'
Person 2 - 'True'
'
by Dr Brain April 29, 2012
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