conc 

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.

conc by Pyro-Whore August 19, 2006

Conc 

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-

Conc by unidentifiedmen January 2, 2008

Conc 

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.

Conc by Cayk Smow April 23, 2019

Conc 

A state of being under the influence by a drug; getting "concked". Synonym: high, boofed, gone.

-Bro, imagine me on conc..
-Bro..

Conc by Bigpep121 March 7, 2019

Conc 

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

Conc by CONCman October 30, 2019

conc 

a concrete cowboy aka harry hobs

oh his such a hob absolute concrete cowboy

conc by Pinky. 4 August 20, 2021

conc !!!!!!!! 

It literally means fucking nothing. Other than to express someone's feelings whenever, wherever, however.

Specifically used in online conversations as it has no known pronunciation

Man 1: "Dude I just got mad coochie last night"

Man 2: "conc !!!!!!!!"

conc !!!!!!!! by KauvBallen January 10, 2022