2. any fungus that attacks various plants or that produces such a coating or discoloration
3. any plant disease, as powdery mildew, caused by such fungus
verb transitive, verb intransitive
4. to affect or become affected with mildew
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'mildew'
< OE meledeaw,
nectar, lit., honeydew, akin to Goth milith,
honey < IE base *melit-
(> L mel,
honey) + base of OE deaw, dew