encauma

from The Collaborative International Dictionary of English v.0.48

Encauma \En*cau"ma\, n. [NL., from Gr. ? mark caused by burning,
   fr. ?. See {Encaustic}.] (Med.)
   An ulcer in the eye, upon the cornea, which causes the loss
   of the humors. --Dunglison.
   [1913 Webster]