any of several plants belonging to the genus Rheum, of the buckwheat family, as R. officinale, having a medicinal rhizome, and R. rhabarbarum, having edible leafstalks.

the rhizome of any medicinal species of this plant, forming a combined cathartic and astringent.

the edible, fleshy leafstalks of R. rhabarbarum, used in making pies, preserves, etc.

Slang . a quarrel or squabble.

noun

altercation , bicker , clash , contention , controversy , debate , difficulty , disagreement , dispute , fight , polemic , quarrel , run-in , spat , squabble , tiff , word , wrangle , argument , discussion , hassle