Mildew
WordNet
noun
(1) A fungus that produces a superficial (usually white) growth on organic matter
(2) The process of becoming mildewed
verb
(3) Become moldy; spoil due to humidity
"The furniture molded in the old house"
WiktionaryText
Noun
- A growth of minute powdery or webby fungi, whitish or of different colors, found on various diseased or decaying substances.
Verb
- To taint with mildew.
- He . . . mildews the white wheat. --Shak.
- To become tainted with mildew.