c4

US plastic explosive.

"Hand me the C4."

by Diego July 29, 2003

c4

a very powerful explosive....... boom!

Alrightey then, first we're going to knock at their door say, 'open up! it's the police!' and if that doesn't work we're using C4

by Haiku Osowa October 1, 2003

c4

A common type of rubber used on Climbing shoes.

by Fetus October 19, 2003

c4

c4 represents the 4 originals...crazy-creditz-cautious-comedy. started in 02 but has grown since then. members from....west pittsburg...concord..antioch..dub c...925...all members names begins with a C describing there characteristics. The Name c4 given to them by grandma...mostly consist of mainly vietnamese...also goes by c fizzle

"damm dont fuck with them c4 niggas"

by trizzle December 11, 2004

c4

A radio transmission in Counter-Strike, meaning:

Sector Clear,

but said in normal life

c4, c4!!! wtf?

by Lorne Richardson July 6, 2003

c4

plastic explosive that makes pretty colors

strap some C4 onto the kamikaze rats and let em go...and here we have it folks, just like fourth of july

by ninja gas June 30, 2006

c4

meaning cock to forehead. A slang used to confuse hookers or sluty girls.

You up for some C4 later?

by j dogg March 13, 2005