loophole

English Thesaurus

1. a small hole in a fortified wall; for observation or discharging weapons (noun.artifact)

hypernym	:	hole,
definition	:	an opening deliberately made in or through something (noun.artifact)

2. an ambiguity (especially one in the text of a law or contract) that makes it possible to evade a difficulty or obligation (noun.communication)

hypernym	:	ambiguity,
definition	:	an expression whose meaning cannot be determined from its context (noun.communication)

domain category	:	contract,
definition	:	a binding agreement between two or more persons that is enforceable by law (noun.communication)