What is the meaning of Vegetable?

Any plant.

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.

The edible part of such a plant.

A person whose brain (or, infrequently, whose body) has been damaged to the point that they cannot interact with the surrounding environment; a person in a persistent vegetative state.

A mine (explosive device).

Of or relating to plants.

Of or relating to vegetables.

Source: wiktionary.org