- any of various plants belonging to the genus Dieffenbachia, of the arum family, native to tropical America, often cultivated as houseplants for their decorative foliage.
- any plant of the tropical American evergreen perennial genus Dieffenbachia, some species of which are grown as pot plants for their handsome variegated foliage. The plants are poisonous and the sap is extremely acrid: family Araceae
