Glā'çis or Gla-çis', n.

n. [Fr. glacis, from L. Lat. glatia, smoothness, from Ger. glatt, smooth, even.] An easy, insensible slope; especially (Fort.), that mass of earth which serves as a parapet to the covered way, having an easy slope or declivity toward the exterior ground. [See Illust. of Ravelin.]