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Conc meaning Conccusion grenade. Used in TFC ( Team Fortress Classic ) A halflife multiplayer mod.

Usually used for " Conc Jumping " Conc make somewhat of a forcefield and pushes the user in directions according where there standing
See if you can conc over that bridge.
by Pyro-Whore August 19, 2006
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Someone that is explicitly bad at everything they do and say in life, especially if their name starts with anything from A-C.
You're such a God-damn Conc step-bro.
Why are you being such a filthy Conc you cheeseburger lover.
by Cayk Smow April 23, 2019
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Originated in chemistry while learning about concentrations.

1. Solid, concrete
2. Pwn
3. Concentration
1. Dude that shit's conc!
2. He totally just conced you.
3. -insert chem mumbo jumbo-
by unidentifiedmen December 06, 2007
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A state of being under the influence by a drug; getting "concked". Synonym: high, boofed, gone.
-Bro, imagine me on conc..
by Bigpep121 March 07, 2019
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A conc is very similar to a zoot or a boof. In essence it is a spliff of weed, Low grade usually this term is very popular in Cambridge but not used much elsewhere.
A Cambridge boy:Hey man I’m going down on Sunday to smoke a conc
Literally anyone else: a what?
A Cambridge boy: a CONC MAN, it means a large spliff weed
by CONCman October 30, 2019
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