1 (alsoinformalveggieespecially in North American English)a plant or part of a plant that is eaten as food. Potatoes, beans and onions are all vegetablesgreen vegetables(= for example cabbage )root vegetables(= for example carrots )a salad of raw vegetablesa vegetable garden/patch/plotvegetable matter (= plants in general) compare animal, fruit, mineral2 (British English alsocabbage)a person who is physically alive but not capable of much mental or physical activity, for example because of an accident or illnessSevere brain damage turned him into a vegetable.3a person who has a boring lifeSince losing my job I've been a vegetable.