look up any word, like cunt:
 
2.
To light up a fucking joint and to be so high....
MaN FucK WaS i eVeR BLaZiN iT uP At JoeS CRiB YeSTeRDaY!
by The Reefer Man May 08, 2005
 
1.
to light up a mothafuckin blunt
Yo, nigga blaze it up!
by J5 April 10, 2004
 
3.
have a good time
we really blazed it up at that party last nite
by jimmy December 30, 2003