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1.
to crack under pressure
this nigga buckled at the foul line wit 2 seconds left and airballed it
by Griff July 01, 2004
 
2.
The act of releasing vile waste.
Be careful, Kyle just Buckled in there.
by Ace February 16, 2005
 
3.
a really expensive store
hey how much are those jeans?
78 bucks
holy crap! how much is that shirt?
35 bucks
holy crap!
by baby June 17, 2004
 
4.
Stating someone is smash-able.
Mike: Did you see Lexi tonight?
Justin: The one in the black top?
Mike: Yeah I'd buckle.
by Binkem March 03, 2011
 
5.
verb

"to buckle"

To get down to business, to study. Usually used by students who have felt their academic performance to be sub-par.
"I've got to buckle, Iana. Next semester I've got eight classes - all in calculus."

"To hell with buckling, I need to party!"
by SonyaW December 25, 2007
 
6.
To leave or give-up when losing an online game (For Eg. Counter-Strike). Can also refer to real life going home early on a night out or to give up at something.
Jesus christ i was pwning a noob and he fucking did a buckle
by BuckleZ May 31, 2007
 
7.
To trip over by accident i.e over a curb.
"Oh, he buckled and cracked his neck"
by Devang June 19, 2006