Definition of mildew
(Entry 1 of 2)
1a : a superficial usually whitish growth produced especially on organic matter or living plants by fungi (as of the families Erysiphaceae and Peronosporaceae)
b : a fungus producing mildew
2 : a discoloration caused by fungi
mildew
verbmildewed; mildewing; mildews
Definition of mildew (Entry 2 of 2)
: to affect with or as if with mildew
: to become affected with mildew
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Time Traveler for mildew
The first known use of mildew was in the 14th century
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