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1.
to be completely "out of control" (OC!)
Bra! them drugs you snatched at the trap is duct!
by shaggyrebel89 September 26, 2006
 
2.
similar to an air vent.
The burgular crawled through the mansion ducts.
by CombatWombat August 17, 2003
 
3.
to apply duct tape to
From Megas XLR

When in doubt, duct it.
by Mark August 22, 2004