1.Definition: a pernicious and malign influence that is hard to get rid of

"Racism is a pestilence at the heart of the nation", "According to him, I was the canker in their midst"

Related Noun(s):canker

Category: General

2.Definition: 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

Related Noun(s):pest, pestis, plague

Category: General

3.Definition: any epidemic disease with a high death rate

Related Noun(s):pest, plague

Category: General