||Rhe"um (rē"ŭm), n. [NL., from L. Rha the river Volga, on the banks of which it grows. See Rhubarb.] (Bot.) A genus of plants. See Rhubarb.

Rheum (r&udd;m), n. [OF. reume, rheume, F. rhume a cold,, L. rheuma rheum, from Gr. &?;&?;&?;, fr. "rei^n 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.

||Rhe"um (rē"ŭm), n. [NL., from L. Rha the river Volga, on the banks of which it grows. See Rhubarb.] (Bot.) A genus of plants. See Rhubarb.

Rheum (r&udd;m), n. [OF. reume, rheume, F. rhume a cold,, L. rheuma rheum, from Gr. &?;&?;&?;, fr. "rei^n 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.

• (physiology) A watery or thin discharge, of serum or mucus, especially from the eyes or nose.
  

Translingual
• a taxonomic genus, within family Polygonaceae - rhubarb