Third-person singular simple present indicative form of trick-or-treat

simple past tense and past participle of trick-or-treat

(obsolete) A stratagem, a clever trick; a ruse. / A delusion; a trick of the brain. / A puzzle designed to exercise the brain.

(Britain, slang) A psychiatrist.

(chiefly US, idiomatic, of a prostitute) To perform a sexual service for a customer.

A remarkable act carried out purportedly by magical means but actually by trickery or illusion, generally as a form of entertainment.

A trick that could be performed at a party for entertainment.

(video games, derogatory) A player who consistently plays a video game using only one of the available characters or skill sets.

(video games, transitive, intransitive, derogatory) To consistently play a video game using only one of the available characters or skill sets.

(US, around New York City, Connecticut, Rhode Island) A particular night, commonly the night of the 30th to the 31st of October, during which young people play pranks and do mischief in their neighborhoods.