Oxford Advanced American Dictionary

Definition of vegetable noun from the Oxford Advanced Learner's Dictionary

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vegetable

noun
vegetable pronunciation English ˈvedʒtəbl vegetable pronunciation American ˈvedʒtəbl
 
1 (also informal veggie especially 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 also cabbage) 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.3 a person who has a boring lifeSince losing my job I've been a vegetable.