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English definition of “pest”

pest

noun [C]     /pest/
an insect or small animal that is harmful or damages crops : common pests such as rats , mice , or cockroaches General and informal words for animals informal an annoying person , especially a child : Put that back, you little pest!Children and babies
(Definition of pest noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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