mad apple

(noun) hairy upright herb native to southeastern Asia but widely cultivated for its large glossy edible fruit commonly used as a vegetable. Synonyms: eggplant, aubergine, brinjal, eggplant bush, garden egg, mad apple, Solanum melongena.

(noun) egg-shaped vegetable having a shiny skin typically dark purple but occasionally white or yellow. Synonyms: eggplant, aubergine, mad apple.