lup hol
noun
1. a way of avoiding or escaping a requirement, regulation, or the like, esp. by taking advantage of an omission or ambiguity in the written text of a legal contract or other document.
Google used loopholes to cut their taxes by 3.1 billion dollars.
She glanced around her in an agony of despair, saw no loophole of escape, and gathering up the unlucky sketch, she stumbled up the aisle to the desk, still holding her scarlet-tipped paint brush in her hand. (Ruth Brown MacArthur, The Lilac Lady)
2. a small slit, hole, or opening, esp. one in the walls of a fort, for the discharge of firearms.
He pulled away a small sandbag that blocked a loophole, and, holding his rifle by the butt at arm-length, poked the muzzle out slowly. (Boyd Cable, Between the Lines)
transitive verb
to construct or fashion loopholes in.
The Mexicans increased their fortifications, preparing for a desperate combat on the morrow. They threw up new earthworks, and they loopholed many of the houses that they held. (Joseph A. Altshuler, The Texan Star: The Story of a Great Fight for Liberty)