killer

柯林斯词典

1. N-COUNT A killer is a person who has killed someone, or who intends to kill someone. 杀人者; 杀手
The police are searching for his killers. 警方正在缉拿杀死他的凶手。
2. N-COUNT You can refer to something that causes death or is likely to cause death as a killer. 致命的事物
Heart disease is the biggest killer of men in developed countries. 对于发达国家的人来说，心脏病是最致命的杀手。

Through a process of deduction , the detectives discovered the identity of the killer.
The police have widened their dragnet in their search for the killer.
Police are still hoping to find the dead woman's killer.
She determined to avenge herself on the killer.
The police have warned the public that the killer could strike again.