Meaning of PEST in English

PEST

/ pest; NAmE / noun

1.

an insect or animal that destroys plants, food, etc. :

pest control

insect / plant / garden pests

2.

( informal ) an annoying person or thing :

That child is being a real pest.

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WORD ORIGIN

late 15th cent. (denoting the bubonic plague): from French peste or Latin pestis plague.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.