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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."
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by Rawnie Phen October 31, 2020
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Nov 23 Word of the Day
A massive dump that takes 10 to 15 times to flush.
After Thanksgiving, I had to Take a Trump.
by JRBIV December 11, 2019
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its used to describe the favorite, mostly in betting and gambling
the patriots have been the chalk in the NFL for several years
by pballman117 November 20, 2005
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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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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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London expression for coke (cocaine)
That's mighty fine chalk you've managed to acquire from Bristol.
by Dan Fox June 19, 2003
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