Killer
Kill´er
| 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" | |
| 4. |  killer - predatory black-and-white toothed whale with large dorsal fin; common in cold seas |