look up any word, like pussy:
 
1.
shack v. intr.

to spend the night at someone's place, sleep in the same bed, and mess around. sex may or may not occur.
"I shacked with him four nights last week, so I think things are getting pretty serious."
by jpatt December 24, 2004
 
2.
to spend the night in someone else's room
This week I shacked Wednesday, Friday, and Saturday with three different guys.

I couldn't sleep last night because Amanda was shacking with her boyfriend and fucking hardcore!
by fupa December 05, 2004
 
3.
A term used by military pilots esp. the Air Force to indicate to combat controlers, targeters, and air command that the assigned or engaged target has been hit in a manner other than superficial damage.

Also adopted by some Spec. Ops forces with similar meanings.
see above
by genmatt February 15, 2004
 
4.
Air Force term, a good hit on a ground target.
by Sonic February 05, 2003
 
5.
ghetto ass house
lets go to my shack and fuck
by h0b0 March 14, 2003
 
6.
(Verb) To more or less bring someone home from the bar.
I shacked up with her sister last night.
by Dr. Schmegma May 19, 2003
 
7.
1. Marijuana
"hey neill, wanna smoke some shack?"
by KushShady December 16, 2013