noun.
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.
noun.
A deadly epidemic disease; a pestilence.
The Century Dictionary and Cyclopedia
noun.
Plague; pestilence; a deadly epidemic disease.
noun.
Any very noxious, mischievous, or destructive thing, or a mischievous, destructive, very annoying, or troublesome person.
noun.Synonyms Infection.
noun.
Scourge, nuisance.
the GNU version of the Collaborative International Dictionary of English
noun.
A fatal epidemic disease; a pestilence; specif., the plague.
noun.
Anything which resembles a pest; one who, or that which, is troublesome, noxious, mischievous, or destructive; a nuisance.
noun.
An annoying, harmful, often destructive creature.
noun.
An annoying person.
noun.
Someone with poor social discipline who continually bothers disinterested women.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal
noun.
a persistently annoying person
noun.
any epidemic disease with a high death rate
noun.
any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.
Word Usage
"The term pest derives from the Latin pestis for plague and is used to describe plants (weeds), vertebrates, insects, mites, pathogens and other organisms that occur where we do not want them."