in building, an easy insensible slope or declivity.

The descent of the glacis is less steep than that of the talus. In gardening, a descent sometimes begins in talus, and ends in glacis.

The glacis of the corniche, is an easy imperceptible slope in the cymatium, to promote the descent and draining off the rain water.

in Fortification, that mass of earth which serves as a parapet to the covered way, sloping easily towards the champaign or field.