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English definition of “killer”

killer

noun (DEATH)    /ˈkɪl.ər/ US  //
B1 [C] someone who kills another person: Police are still hoping to find the dead woman's killer.Murderers and attackers [C] something that kills people, especially a disease or other illness: Cancer and heart disease are the UK's biggest killers.KillingMurder and attempted murder [C] something that destroys something: This chemical is found in most weedkillers.Destroying and demolishingDamaging and spoiling killer     adjective [before noun] a killer disease killer beesInformal words for goodGood, better and bestQuite good, or not very good
(Definition of killer noun (DEATH) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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