Escarpment

[ɪ'skɑːpm(ə)nt;e-] or [ɪ'skɑrpmənt]

Definition

(noun.) a steep artificial slope in front of a fortification.

(noun.) a long steep slope or cliff at the edge of a plateau or ridge; usually formed by erosion.

Checked by Beth--From WordNet

Definition

(n.) 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.

Checked by Bianca