GLACIS
Etymology
Noun
glacis (plural glacises or glacis)
(military) A gentle incline in front of a fortification.
(military) The angled armour plate on the front of a tank; glacis plate.
(geomorphology) An erosional or depositional landform, with little slope.
(postal service) A device for sorting mail which slides parcels across a sloped surface.
Proper noun
Glacis
An administrative district in Seychelles
Source: Wiktionary
Gla"cis, n. Etym: [F. glacis; -- so named from its smoothness. See
Glacier.]
Definition: 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).
Source: Webster’s Unabridged Dictionary 1913 Edition