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English definition of “poison”

poison

verb [T] (ADD SUBSTANCE)    /ˈpɔɪ.zən/
B2 to kill a person or animal or to make them very ill by giving them poison: Four members of the family had been poisoned, but not fatally.Poisoning and allergyKillingMurder and attempted murderMurder and attempted murderKilling B2 to put poison in someone's food or drink: He said that someone had poisoned his coffee.Poisoning and allergy B2 to add dangerous chemicals or other harmful substances to something such as water or air: The chemical leak had poisoned the water supply.Environmental issuesRubbish and wasteProtection and protectors
(Definition of poison verb (ADD SUBSTANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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