noun: A poison pill; a pill intended to kill the person who ingests it.
noun: (philosophy) A philosophical dilemma in which one is offered a large sum of money in order to take a pill that has a specific probability of resulting in death.
noun: A traditional Tibetan remedy.
noun: (often attributive) A notional pill taken by those who have adopted a nihilistic far-right philosophy, especially incels who believe unattractive men will never be sexually or romantically successful.
noun: Used other than figuratively or idiomatically: see black, pill.
verb: (transitive) To cause another to adopt a nihilistic philosophy.