|Origin:||plage, from Latin plaga 'hit, wound'|
a disease that causes death and spreads quickly to a large number of people:
drops in population levels due to plagues and famines
2 [uncountable] also the plagueMI
a very infectious disease that produces high fever and swollen places on the body, and often leads to death, especially bubonic plague [↪ Black Death]:
The plague caused 100,000 deaths in London alone in the 1600s.
an uncontrolled and harmful increase in the numbers of a particular animal or insect:
A plague of squirrels is threatening our forests.