n. 1.杀人者，凶手。 2.逆戟鲸(＝killerwhale)。 3.杀死…的药剂[东西]，宰杀的器具。 4.〔口语〕迷人的人[物]。 5.【无线电】限制器，抑制器，瞄准器。 6. 待屠宰的牲畜。 a humane killer使动物无痛苦的屠宰机。 a submarine killer防潜舰艇。 a weed killer除草药。 a noise killer噪声抑制器。 a robot killer雷达自动瞄准器。 a spot killer亮点消除器，余辉消除器。 That flowered hat is a real killer. 那顶花帽真漂亮。
predatory black-and-white toothed whale with large dorsal fin; common in cold seas 同义词：killer whale, orca, grampus, sea wolf, Orcinus orca,
a difficulty that is hard to deal with; "that exam was a real killer"
someone who causes the death of a person or animal 同义词：slayer,
the causal agent resulting in death; "heart disease is the biggest killer in the United States" 同义词：cause of death,
A killer is someone or something that kills, such as a murderer.
例句与用法
1.
I am afraid he lacks the killer instinct . 我看他不够心狠手辣。
2.
Police are hunting her killer . 警方正在追捕杀害她的凶手。
3.
That flowered hat is a real killer . 那顶花帽真漂亮。
4.
Heroin is a killer . 海洛因是致命的毒品。
5.
Jack ruby, killer of president kennedy's assassin, oswald, was found guilty and sentenced to death . 杰克鲁比因为打死了奥斯瓦尔德（即那个暗杀肯尼迪总统的凶手）而被认定有罪，判处极刑。
6.
And then word will travel straight to those killers 然后风声会传到那些杀手哪里
7.
And then word will travel straight to those killers 然后风声会传到那些杀手哪里
8.
Thanks for finding my daughter ' s killers , sean 谢谢找到杀害我女儿的凶手，肖恩
9.
There ' s crooks , killers and monsters everywhere 那里有骗子，杀手，到处都是怪兽
10.
The killer never repented the crime he committed 凶手对其所犯的罪行从不后悔。
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