Rheum
Rheum (rē"um) , noun
[New Latin, from Latin Rha the river Volga, on the banks of which it grows. See Rhubarb.]
(Botany) A genus of plants. See Rhubarb.
Rheum (rum) , noun
[Old French reume, rheume, French rhume a cold,, Latin rheuma rheum, from Greek {not transcribed}, from "rei^n to flow, akin to English stream. See Stream, n., and compare Hemorrhoids.]
(Medicine) A serous or mucous discharge, especially one from the eves or nose.
I have a rheum in mine eyes too.