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1.
jib
Verb. To jib. Jibbing. The act of manuvering a bicycle, skateboard, snowboard or skis in tricky manner on top of and around a structure such as a stump, rocks, stairs, railigs, rooftops, etc. When you are playing around, showing off, jumping, flipping, hopping, etc you are jibbing.
Biker: Lets go jib on the steps at the library.

Skier: We were jibbin' all over the terrain park saturday.
by Scott February 23, 2004
 
2.
jib
a way of being or thinking.
I like the cut of your jib.
by The Widget June 05, 2004
 
3.
jib
Slang for Crystal Meth
Dude, You wanna go smoke some Jib?
by Nobody March 30, 2003
 
4.
jib
A jib is the front sail from large frigate ships of ancient days. You used to be able to tell what kind of ship and what nationality they where from.
Mr. Burns I don't like the cut of his jib.
by Elickzer December 30, 2003
 
5.
Your teeth, but can be used to refer to any of the general visible mouth area.
"Crack you in the jibs, if you ain't careful" , "You better watch your mouth 'cause you about to get busted in the jibs"
by bigchino June 02, 2006
 
6.
Jib
Jib is a word that can be used in place of any noun or idea in the event that using the actual word for the noun or idea is inconvenient or undesired for any reason.
Did you get the jib I asked for? Yeah, I put it on the list and I got it at Von's today.
by Unique Nuyorkque December 04, 2012
 
7.
jib
jib....to avoid or get out of doing something.
To jib something is to duck out of doing it.
To be a jibber is to let somebody (maybe a friend) down.
To let down all your friends at the last moment is to be a jibbin git.
"He not coming to the football, he`s jibbed out"

"I bet you ten quid he`ll jib the footy"

"He never comes to the footy anymore, he`s a right jibber these days"

"He`s rung & said he`s not coming, the jibbin git!"
by Dr Fox May 08, 2007