def·i·lade /ˈdɛfəˌled, ˌlɑd/
(vt.)遮蔽遮蔽
De·fi·lade v. t. [imp. & p. p. Defiladed; p. pr. & vb. n. Defilading.] Mil. To raise, as a rampart, so as to shelter interior works commanded from some higher point.
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defilade
n : the arrangement of defensive fortifications to protect
against enemy fire