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9. Chalk
The common term for the naturally occurring substance Calcium Carbonate (CaCO3) It is also made synthetically, and often used for writing on blackboards (traditionally made of slate) and sidewalks.
Teachers often have a large supply of chalk on hand!
by mikeejimbo Sep 7, 2005 add a video
1. chalk
its used to describe the favorite, mostly in betting and gambling
the patriots have been the chalk in the NFL for several years
2. chalk
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 Apr 11, 2005 add a video
3. chalk
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!
4. Chalk
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!"
5. chalk
London expression for coke (cocaine)
That's mighty fine chalk you've managed to acquire from Bristol.
by Dan Fox Jun 19, 2003 add a video
6. chalk
Another word born in Cheltenham High School meaning any of the following:
1) to blow something off
2) to damage, destroy, or hurt someone/something
3) to ignore or disregard
4) to take it like a boss
"Yo man, aren't you supposed have a date with your girl tonight?"
"Yea, whatever... I'm chalkin it to go see this other chick."

"Damn, i don't remember learning any of this. I'm about to chalk the shit outta this math test."

"My car got all chalked up from the accident i got in."

"He pissed me off so i chalked the mess outta him."

"You be aight. Just chalk it up bro."

"I'm real tired... i think i'ma chalk school today."
7. chalk
when a person is physically or emotionally hurt and they don't show it at all
my sister: "my friend broke her arm"
me: "tell her to chalk it"
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