pest
pest · noun
Definitions
noun
- 1.
An insect or animal that causes damage to crops, food, or livestock.
- 2.
(informal) An annoying person, especially a child who bothers others.
- 3.
(archaic) A deadly epidemic disease, especially bubonic plague.
Forms
plural: pests
Related words
Etymology
From Latin pestis meaning "plague, pestilence, contagious disease."