demulcent
1. de.mul.cent \di-'m*l-s*nt\ aj [L demulcent-, demulcens, prp. or demulce-re to soothe, fr]. de- + mulce-re to soothe : SOOTHING 2. demulcent n : a usu. mucilaginous or oily substance (as tragacanth) capable of soothin g or protecting an abraded mucous membrane