mexiletine: antiarrhythmic drug (trade name Mexitil) used to treat ventricular arrhythmias
causal agent: any entity that produces an effect or is responsible for events or results
cargo cult: (Melanesia) the followers of one of several millenarian cults that believe salvation will come in the form of wealth (`cargo') brought by westerners; some ascribe divine attributes to westerners on first contact (especially to missionaries)