tu·ber
noun/ˈtjuːbə(r)/
/ˈtuːbər/
- 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
块茎（某些植物的肉质地下茎）；块根 Word Originmid 17th cent.: from Latin, literally ‘hump, swelling’.