DictionaryRoot: meledeaw
Old English
meledeaw
nectar, honeydew
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noun / verb
mildew
MIL-doo/ˈmɪlduː/
A thin layer of fungus that grows on damp surfaces.
Etymology
Old English meledeaw meant “nectar, honeydew,” rather than fungal growth. The name was presumably transferred to fungus because it too was sticky and grew on plants.