Learn how to say Pest correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word pest:
a destructive insect or other animal that attacks crops, food, livestock, etc.:
the tomato plant attracts a pest called whitefly
an effective method for controlling insect pests
informal an annoying person or thing; a nuisance:
he was a real pest
(the pest) archaic bubonic plague.
late 15th century (denoting the bubonic plague): from French peste or Latin pestis ‘plague’