escarp

1. A steep slope or cliff; an escarpment.
2. The inner wall of a ditch or trench dug around a fortification.

1. To cause to form a steep slope.
2. To furnish with an escarp.

[French escarpe, from Italian scarpa. See scarp.]

1. In fortification, a steep bank or wall immediately in front of and below the rampart.

2. Ground formed like an escarp as a feature in a garden.

The noun has one meaning:

Meaning #1: a steep artificial slope in front of a fortification
  Synonyms: escarpment, scarp, protective embankment