Vegetable
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Vegetables is a culinary term denoting any part of a plant that is commonly consumed by humans but that is not regarded as a fruit, a nut, or a grain foodstuff.
Vegetables include the leaves (e.g. lettuce), seed-pods (peas), seeds (beans) and stems (rhubarb) of various plants
Vegetable is also a derogative term indicating a person who is brain-damaged.