loophole

noun

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

Definition categories: communication, ambiguity

2. a small hole in a fortified wall; for observation or discharging weapons

Definition categories: man–made, hole

verb

1. (military) To prepare a building for defense by preparing slits or holes through which to fire on attackers