Meaning : 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.
Synonyms : pestilence, pestis, plague
Meaning : Any epidemic disease with a high death rate.
Synonyms : pestilence, plague
Meaning : Any unwanted and destructive insect or other animal that attacks food or crops or livestock etc..
Example :
He sprayed the garden to get rid of pests.
Many pests have developed resistance to the common pesticides.