mildew
noun /ˈmɪldjuː/
/ˈmɪlduː/
[uncountable]- a very small white fungus that grows on walls, plants, food, etc. in warm wet conditions
霉;霉菌 词源Old English mildēaw ‘honeydew’, of Germanic origin. The first element is related to Latin mel and Greek meli ‘honey’.