Definition of PEST

noun : PEST

Source: WordNet 3.1

  • 1. (

    ) 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 ;

  • 4. (

    ) 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" ;

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