Real Dictionary

tomato
variable noun: Tomatoes are small, soft, red fruit that you can eat raw in salads or cooked as a vegetable.

tomato in American English
a red or yellowish fruit with a juicy pulp, used as a vegetable: botanically it is a berry
noun: any of several plants belonging to the genus Lycopersicon, of the nightshade family, native to Mexico and Central and South America, esp. the widely cultivated species L. lycopersicum, bearing a mildly acid, pulpy, usually red fruit eaten raw or cooked as

tomato in British English
noun: a solanaceous plant, Lycopersicon (or Lycopersicum) esculentum, of South America, widely cultivated for its red fleshy many-seeded edible fruits

tomato in Hospitality
noun: A tomato is a soft, red fruit that you can eat raw in salads or cooked as a vegetable.