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



BrE BrE//ˈtjuːbə(r)//
; NAmE NAmE//ˈtuːbər//
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the short thick round part of an underground stem or root of some plants, such as potatoes, which stores food and from which new plants grow Word Originmid 17th cent.: from Latin, literally ‘hump, swelling’.
See the Oxford Advanced American Dictionary entry: tuber