pest definition, meaning - what is pest in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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English definition of “pest”

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pest

noun [C] uk   us   /pest/
an insect or small animal that is harmful or damages crops: common pests such as rats, mice, or cockroaches informal an annoying person, especially a child: Put that back, you little pest!
(Definition of pest from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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