slasher
n. C1 Advanced US //ˈsɫæʃɝ// UK //slˈæʃɐ// slash·er
n. a person who uses a knife or other sharp tool to hurt or kill someone. It is a short, informal way to describe a killer in horror movies or a soldier with a weapon.
n. a person who uses a sharp instrument, such as a knife or sword, to inflict injury or death. Often used as a clipped form of 'slasher film' or 'slasher weapon' in informal contexts.
The movie features a mysterious slasher who hides in the dark.
The security team was trained to identify a slasher in the crowd during the festival.