I. ˈlüp-ˌhōl noun
Etymology: loop (I)
Date: 1591
1.
a. : a small opening through which small arms may be fired
b. : a similar opening to admit light and air or to permit observation
2. : a means of escape ; especially : an ambiguity or omission in the text through which the intent of a statute, contract, or obligation may be evaded
II. transitive verb
Date: 1664
: to make loopholes in