Pronunciation: (poks),[key] —n.Pathol. 1. a disease characterized by multiple skin pustules, as smallpox.
3. Also called soil rot.Plant Pathol.a disease of sweet potatoes, characterized by numerous pitlike lesions on the roots, caused by a fungus, Streptomyces ipomoea. 4. (used interjectionally to express distaste, rejection, aversion, etc.): A pox on you and your bright ideas!