from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A gentle slope; an incline.
- noun A slope extending down from a fortification.
- noun A neutral area separating conflicting forces.
from The Century Dictionary.
- noun A gentle slope or sloping bank.
- noun An easy slope, like that of the shingle piled on the shore by the action of the tides and waves, less steep than a talus.
from the GNU version of the Collaborative International Dictionary of English.
- noun A gentle slope, or a smooth, gently sloping bank; especially (Fort.), that slope of earth which inclines from the covered way toward the exterior ground or country (see
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun military A gentle
inclinein front of a fortification.
- noun military The angled armour plate on the front of a
tank; glacis plate.
- noun postal service A device for sorting mail which slides parcels across a sloped surface.
from The American Heritage® Dictionary of the English Language, 4th Edition
Thus the ground beyond the ditch, that is, the glacis, covers the walls from the shot of a besieger, and renders it extremely difficult to reach them.
The glacis is the smooth ground outside the ditch.
The purpose of the glacis, which is an inclined plane, is to expose an attacking party to the fire of the guns, which are so placed as to sweep it from the crest of the counterscarp to the edge of the beach.
At the base is a kind of glacis, which runs up at an angle of forty-five from the plain to within fifty, and, in some places, within twenty feet of the foot of the wall.
The Germans labored up the glacis slowly at the most exposed places; now crawling on their bellies, now creeping on hands and knees, but, in the main, moving with erect and steady bearing.
This crusts over the whole glacis of the eastern and northern parts of the piedmont giving very poor soils, usually skeletal lithosols if present at all.
It rises abruptly 1,000 m above an almost flat surrounding glacis.
Again there was no moat, just a glacis, so that they had to mount a kind of stone hill leading up to the wall.
The landscape is characterized by volcanic piles with precipitous slopes, and deeply incised valleys (glacis slopes).
The inner walls of the Crac are ringed by a smooth slope called a glacis.