look up any word, like spook:
 
1.
Yesterday night.
So, what happened yesternight, anyway?
by Bobert June 25, 2004
 
2.
Last Night.
Yesterday Night.
Dude, Mark got so shitfaced yesternight, I think he went home with that gay guy James.
by ZACH BAMF June 22, 2008
 
3.
something that happend last night (instead of yesterday
you dog, yester-night i banged a girl
by sugar daddy AKA dr.awesome May 07, 2009