What is the meaning of Pest?

A pestilence, i.e. a deadly epidemic, a deadly plague.

Any destructive insect that attacks crops or livestock; an agricultural pest.

An annoying person, a nuisance.

An animal regarded as a nuisance, destructive, or a parasite, vermin.

An invasive weed.

plague

pestilence

a plague, pest, pestilence

a specific bovine plague

an obnoxious person

inflection of pesten:

  1. first/second/third-person singular present indicative
  2. imperative

first/second/third-person singular present indicative

imperative

pressure, oppression

a plague

a plague

fist

a perfectivizing particle used with verbs

fist

A plague

A pest; something deeply annoying

Source: wiktionary.org