killer   
  I.kill‧er1 /ˈkɪlə $ -ər/ BrE  AmE  noun [countable]    [Word Family: noun: ↑kill, ↑overkill, ↑killer, ↑killing; verb: ↑kill; adjective: ↑killer]   1. a person, animal, or thing that kills:         Heart disease is America’s number one killer.        the hunt for her killers        weed killer ⇨ serial killer at ↑serial2(1)   2. informal something or someone that is very difficult, tiring, or boring:         The new project is a killer.   3. informal something that is very exciting or impressive:         I’m not saying the film is a killer, but it’s cool. II.killer2 BrE  AmE  adjective [only before noun]    [Word Family: noun: ↑kill, ↑overkill, ↑killer, ↑killing; verb: ↑kill; adjective: ↑killer]   1. very harmful or dangerous:         a killer hurricane        a swarm of killer bees   2. informal very attractive, good, impressive etc:         a book called ‘How to Build a Killer Website’   3. killer instinct a very strong desire to succeed in a situation or activity etc that is very competitive:         Young players these days lack the killer instinct.
  killerhu| ◎ | ['kilə] |  | ※ | danh từ |  |   | ■ | người giết, kẻ giết người |  |   | ■ | dụng cụ giết thịt (súc vật) |  |   | ■ | (động vật học) cá heo ((cũng) killer whale) |  
 
    | 
		 |