Rheum (rṳm), n. [OF. reume, rheume, F. rhume a cold,, L. rheuma rheum, from Gr. ���, fr. ρεἱ̑ν to flow, akin to E. stream. See Stream, n., and cf. Hemorrhoids.] (Med.) A serous or mucous discharge, especially one from the eves or nose.
I have a rheum in mine eyes too. Shak.
Salt rheum. (Med.) See Salt rheum, in the Vocab.