obtundent

from The Collaborative International Dictionary of English v.0.48

Obtundent \Ob*tund"ent\, n. [L. obtundens, p. pr. of obtundere.]
   (Med.)
   A substance which sheathes a part, or blunts irritation,
   usually some bland, oily, or mucilaginous matter; -- nearly
   the same as {demulcent}. --Forsyth.
   [1913 Webster]