rhubarb

中文： 大黄

1. Any plant of the genus Rheum, especially Rheum rhabarbarum, having large leaves and long green or reddish acidic leafstalks that are edible, in particular when cooked (although the leaves are mildly poisonous). (countable, uncountable)
2. The leafstalks of common rhubarb or garden rhubarb (usually known as Rheum × hybridum), which are long, fleshy, often pale red, and with a tart taste, used as a food ingredient; they are frequently stewed with sugar and made into jam or used in crumbles, pies, etc. (countable, uncountable)
3. The dried rhizome and roots of Rheum palmatum (Chinese rhubarb) or Rheum officinale (Tibetan rhubarb), from China, used as a laxative and purgative. (countable, uncountable)
4. A ditch alongside a road or highway. (countable, uncountable) · Driving home yesterday, I almost hit the rhubarb.

复数 rhubarb