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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
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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
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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
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