defilade verb & noun. 
[dɛfɪ'leɪd] E19.[from French défiler + -ADE. Cf. ENFILADE.]A. verb trans. Shield (a position, troops, etc.) from observation or (enfilading) fire by utilizing natural obstacles or erecting fortifications. 
E19.b. noun. The action of defilading; protection of troops etc. from enemy observation or fire; an obstacle or fortification giving protection. 
M19.  [TahlilGaran] English Dictionary ▲