Hypertext Webster Gateway: "escarpment"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Escarpment \Es*carp"ment\, n. [Cf. F. escarpement.]
A steep descent or declivity; steep face or edge of a ridge;
ground about a fortified place, cut away nearly vertically to
prevent hostile approach. See {Scarp}.
From WordNet (r) 1.7 (wn)
escarpment
n 1: a long steep slope or cliff at the edge of a plateau or
ridge; usually formed by erosion [syn: {scarp}]
2: a steep artificial slope in front of a fortification [syn: {escarp},
{scarp}, {protective embankment}]
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