n. | 1. | One who deprives of life; one who, or that which, kills. |
2. | (Zool.) A voracious, toothed whale of the genus Orca, of which several species are known; called also |
Noun | 1. | killer - someone who causes the death of a person or animal Synonyms: slayer |
2. | killer - the causal agent resulting in death; "heart disease is the biggest killer in the United States" Synonyms: cause of death | |
3. | killer - a difficulty that is hard to deal with; "that exam was a real killer" | |
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