Lebron is a slang word for "blow" which is a slang word for cocaine. Prior to the start of the basketball game, Lebron James powders his hands and throws it in the air similar to something you would see Al Pacino do in Scarface.
Mo: Last night was wild.

Krackis: Oh yea? What'd ya get into?

Moseph: I partied with Lebron...

Krackis: Lebron keeps the party going all night.
by Enlicensed One May 09, 2009
Defined on DontLebronMe.com
-verb
canceling too close to a deadline; not leaving others the time to find a replacement.
-> “Rich lebronned his duty of being the DD, forcing us to walk home last night.”
-> “We planned on meeting you guys last night, but the babysitter had to lebron for some new guy she met.”
-> “Every single time you tell me I can count on you, you back out and screw me. All I’m saying is, if you promise me you’ll be there, Don’t Lebron Me.”
-> “The boss doesn’t tolerate lebrons.”
by DontLebronMe October 26, 2010
to fail to execute at a critical juncture in an athletic event.
Boy, Lebron James really lebroned that potential game winning lay-up last night.
by Harry Stanfeld May 01, 2008
to not finish
Was with my main squeeze but was so wasted I had to LeBron her
by AndyBorowitz June 14, 2011
To screw someone over. To inadvertently cause harm to someone by not coming through in the clutch.
I'll pick you up at the airport. Don't worry bro I wouldn't lebron you like that.
by sherhag June 19, 2011
Either an interjection used when one disapproves of something, or a verb meaning approximately the same thing as the slang form of SUCK or FAIL.
This movie LEBRONS!! You bought your jeans a size too small? LEBRON!!
by StarkLife June 15, 2011
In Manderin Chinese LeBron has been known to mean selfish prick and/or bastard.
Sean: Hey Matt pass the ball!

Matt: No

Sean: Dude you're being a total LeBron.
by LeBronhater23 April 24, 2010
v. (LeBronnned, LeBronning)
1. To "choke"

2. To fail to accomplish an important goal (such as obtaining an NBA title on a team that has three great players on it like the Miami Heat)
1.
Guy #1: Dude don't LeBron on your essay!
Guy #2: Okay, I'll try my best!

2.
Guy #1: Did you finish your science project?
Guy #2: Nah, I totally LeBronned it.
by thefailbot June 12, 2011

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