rhubarb

Any of several plants of the genus Rheum, especially R. rhabarbarum, having long edible green or reddish leafstalks that are usually cooked and sweetened.

A preparation made from the dried rhizomes and roots of any of several plants of the genus Rheum, especially R. palmatum or R. officinale of East Asia, used as a laxative.

A quarrel, fight, or heated discussion.

The general name for plants of the genus Rheum, especially for species affording the drug rhubarb and the culinary herb of that name.

The root of any medicinal rhubarb, or some preparation of it.