Webster's Revised Unabridged Dictionary · 1913

Defilement

Defilement , noun

[Compare French défilement. See Defile]

(Military) The protection of the interior walls of a fortification from an enfilading fire, as by covering them, or by a high parapet on the exposed side.

Defilement , noun

[From 3d Defile.]

The act of defiling, or state of being defiled, whether physically or morally; pollution; foulness; dirtiness; uncleanness.
Defilements of the flesh. — Hopkins
The chaste can not rake into such filth without danger of defilement. — Addison