A Vegetable

1. Any plant.
2. A plant raised for some edible part of it, such as the leaves, roots, fruit or flowers, but excluding any plant considered to be a fruit, grain, herb, or spice in the culinary sense. Synonyms: veg, veggie
3. The edible part of such a plant. Synonyms: veg, veggie
4. (figuratively, derogatory) A person whose brain (or, infrequently, body) has been damaged so that they cannot interact with the surrounding environment; a person in a persistent vegetative state. Synonym: cabbage