What is a basic definition of killer? A killer is a person or thing that kills, meaning they end lives. Killer is also used in slang to mean something that is devastating or exhausting.

Strictly speaking, a serial killer is someone who murders at least two people in separate events that occur at different times. Although a serial killer is a distinct classification that differs from that of a mass murderer, spree killer, or contract killer, there are overlaps between them. The meaning of killer is one that kills. How to use killer in a sentence. Definition of killer noun in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. A killer is a person who has killed someone, or who intends to kill someone.

Definition of killer noun in oxford advanced learner's dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. A killer is a person who has killed someone, or who intends to kill someone. The police are searching for his killers. He's a psychopath, a killer. Someone who kills another person: Something that kills people, especially a disease or other…. Learn more.

Someone who kills another person: Something that kills people, especially a disease or other…. Learn more.