Pest Definition
pĕst
pests
noun
pests
A person or thing that causes trouble, annoyance, discomfort, etc.; nuisance; specif., any destructive or troublesome insect, small animal, weed, etc.
Webster's New World
An organism, typically an insect, that sickens or annoys humans, hampers human activities, damages crops or food products, harms livestock, or causes damage to buildings.
American Heritage Medicine
A fatal epidemic disease; esp., bubonic plague.
Webster's New World
(UK, slang) Someone with poor social discipline who continually bothers uninterested women.
Stop being such a pest and leave that girl alone!
Wiktionary
Other Word Forms of Pest
Noun
Singular:
pestPlural:
pestsOrigin of Pest
French peste pestilence from Old French from Latin pestis
From American Heritage Dictionary of the English Language, 5th Edition
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From Middle French peste (=modern French), from Latin pestis
From Wiktionary
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