Here's a breakdown of the phrase:
* Pestilence: A deadly and contagious disease, often an epidemic. It can refer to plague, cholera, or other serious illnesses.
* Striken: Afflicted or affected by something, in this case, the pestilence.
* Multitudes: A large number of people, implying a significant population affected.
Putting it together, "pestilence-stricken multitudes" paints a vivid picture of a catastrophic situation where a large number of people are suffering and dying from a disease. This phrase is often used in historical contexts or fictional narratives to convey a sense of despair and loss.