IPA: /ˈstræŋɡlər/
KK: /ˈstræŋɡlər/
A person who kills someone by squeezing their neck tightly, preventing them from breathing.
The police arrested a suspect believed to be a strangler in the recent murder cases.
Strangler → It is formed from "strangle" (from Old English "strenglan", meaning to constrict or choke) and "-er" (meaning a person who). A strangler is a person who constricts or chokes another, typically leading to death.
Think of someone who 'constricts' or 'chokes' — that's what a strangler does, and the '-er' just means a person.