Inclination

• Steep descent
• Steep slope around a rampart
• Fort's steep slope
• Steep artificial slope
• Declivity
• Walled side of a ditch
• Moat wall
• Part of a rampart

Wiktionary Word definitions in Wiktionary
n. The side of the ditch next to the parapet in a fortification; the scarp. vb. (context transitive English) To make into, or furnish with, a steep slope, like that of a scarp.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"steep slope," especially as part of a fortification, 1680s, from French escarpe (16c.), from Italian scarpa (see scarp ).