black pill

Short definition from Wiktionary

Noun

1. 1
   An opium pill.
2. 2
   A poison pill; a pill intended to kill the person who ingests it.
3. 3
   A hypothetical pill with a specific probability of causing death, which one is offered a large sum of money in order to take, as a philosophical dilemma.
4. 4
   A traditional Tibetan remedy.
5. 5
   A notional pill taken by those who have adopted a nihilistic, usually (but not necessarily) far-right philosophy, especially incels who believe unattractive men will never be sexually or romantically successful, or those who are pessimistic about social or political issues.
6. 6
   Used other than figuratively or idiomatically: see black, pill.
7. 7
   Alternative spelling of black pill.

Verb

1. 1
   To cause another to adopt a nihilistic philosophy.
2. 2
   Alternative spelling of black pill (“to adopt a nihilistic far-right philosophy”).
3. 3
   Alternative spelling of blackpill (“to adopt the belief that the universe is inherently devoid of meaning”).

Proper noun

1. 1
   A suburb in Mumbles community, City and County of Swansea, Wales (OS grid ref SS6190).