<botany> A genus of plants. See Rhubarb.

Origin: NL, from L. Rha the river Volga, on the banks of which it grows. See Rhubarb.

<medicine> A serous or mucous discharge, especially one from the eves or nose. "I have a rheum in mine eyes too." (Shak) Salt rheum.

<medicine> See Salt rheum, in the Vocab.

Origin: OF. Reume, rheume, F. Rhume a cold, L. Rheuma rheum, from Gr, fr. To flow, akin to E. Stream. See Stream, and cf. Haemorrhoids.

(01 Mar 1998)