Wiktionary
slasher movie
n. (context film English) A horror movie which depicts gory, murderous violence, often including scenes of torture.
Usage examples of "slasher movie".
They emerged looking gleefully horrified -- like teenagers coming out of the summer's coolest slasher movie.
But the Marlowe/Verhoeven approach is to slaughter every character in the cast, in the most gruesome manner possible, as if they were making some direct-to-video slasher movie.