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Noun: pest  pest
  1. Any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.
    "he sprayed the garden to get rid of pests"; "many pests have developed resistance to the common pesticides"
     
  2. 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
    - plague, pestilence, pestis
     
  3. Any epidemic disease with a high death rate
    - plague, pestilence
     
  4. A persistently annoying person
    - blighter, cuss, pesterer, gadfly

Derived forms: pests

Type of: animal, animate being, beast, brute, creature, epidemic disease, fauna, persecutor, tormenter, tormentor

Encyclopedia: Pest, Hungary