/ˈkɪlə/ – Noun
Definition: kẻ giết người, chủ thể của án mạng, kẻ sát nhân, sát thủ.
A more thorough explanation: In legal terms, a “killer” refers to a person who has unlawfully caused the death of another person, typically through intentional or reckless actions.
Example: The defendant was charged with first-degree murder for his role as the killer in the crime.