The Collaborative International Dictionary of English v.0.48:

Enfilade \En`fi*lade"\, v. t. [imp. & p. p. Enfiladed; p. pr.
   & vb. n. Enfilading.] (Mil.)
   To pierce, scour, or rake with shot in the direction of the
   length of, as a work, or a line of troops. --Campbell.
   [1913 Webster]