from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A gentle slope; an incline.
- n. A slope extending down from a fortification.
- n. A neutral area separating conflicting forces.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A gentle incline in front of a fortification.
- n. The angled armour plate on the front of a tank; glacis plate.
- n. A device for sorting mail which slides parcels across a sloped surface.
from the GNU version of the Collaborative International Dictionary of English
- n. 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 Illust. of ravelin).
from The Century Dictionary and Cyclopedia
- n. A gentle slope or sloping bank.
- n. 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.
French, from Old French, from glacer, to slide, from glace, ice, from Vulgar Latin *glacia, from Latin glaciēs; see gel- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)