释义 |
blue mold noun 1. : a fungus of the genus Penicillium; especially : a mold that produces blue or blue-green surface growths on bread and other foods — compare green mold 2. also blue mold rot : a plant disease caused by a blue-mold fungus 3. : a serious fungous disease of tobacco seedlings caused by a fungus (Peronospora tabacina) and characterized by yellowish spots and a bluish gray mildew on the underside of the leaves — called also downy mildew |