*1 : a contagious or [http://en.wikipedia.org/wiki/Infectious_disease infectious disease] that is [http://en.wikipedia.org/wiki/Virulent virulent] and devastating;
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*1 : a contagious or [https://en.wikipedia.org/wiki/Infectious_disease infectious disease] that is [https://en.wikipedia.org/wiki/Virulent virulent] and devastating;
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:an [http://en.wikipedia.org/wiki/Epidemic epidemic]; especially : [http://en.wikipedia.org/wiki/Bubonic_plague bubonic plague] which is called pestis in [[Latin]].
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:an [https://en.wikipedia.org/wiki/Epidemic epidemic]; especially : [https://en.wikipedia.org/wiki/Bubonic_plague bubonic plague] which is called pestis in [[Latin]].
*2 : something that is destructive or pernicious <I'll pour this pestilence into his ear — Shakespeare>
*2 : something that is destructive or pernicious <I'll pour this pestilence into his ear — Shakespeare>