look up any word, like eiffel tower:
 
1.
1. unconscious

2. asleep

3. alcohol intoxicated, drunk (probably from the fact that you lose consciousness when you drink to much)
Don't bother, he's out cold.
by Light Joker May 13, 2007
 
2.
when something is awesome, really cool, fresh
damn, dat niggaz' ride is "out cold!"
by Moox May 01, 2008
 
3.
1. crazy
2. nice
3. fucked up
1. Don't fuck with that nigga; he's out cold! 2. Man, your ride is out cold. 3. Yo, that was some out cold shit you did!
by warewoof September 11, 2003