n Any plant.
n 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.
n The edible part of such a plant.
n (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.
adj Of or relating to plants.
adj Of or relating to vegetables.