snuff film

noun
1.
Slang. a pornographic film that shows an actual murder of one of the performers, as at the end of a sadistic act.
2.
splatter film.
Also called snuff movie.
Origin
1970-75
British Dictionary definitions for snuff film

snuff movie

noun
1.
(slang) a pornographic film in which an unsuspecting actress or actor is murdered as the climax of the film
Slang definitions & phrases for snuff film

snuff film

noun phrase

A movie in which the actual killing of a person is shown • Filmed murder is very likely a lurid idea rather than a fact: Year Zero has the shock value of a snuff film/ If he'd told them he was making a snuff movie he would have been treated better (1975+)