Source : Webster's Revised Unabridged Dictionary (1913)

Gleet \Gleet\, n. [OE. glette, glet, glat, mucus, pus, filth,
   OF. glete.] (Med.)
   A transparent mucous discharge from the membrane of the
   urethra, commonly an effect of gonorrhea. --Hoblyn.

Gleet \Gleet\, v. i.
   1. To flow in a thin, limpid humor; to ooze, as gleet.
      --Wiseman.

   2. To flow slowly, as water. --Cheyne.

Source : WordNet®

gleet
     n : a thin morbid discharge as from a wound or especially
         chronic gonorrhea