boyau

  1. Noun.  (military, defense) In military fortification, a trench or ditch covered with a parapet that provides communication between two trenches, particularly the rear and front lines. Boyaus were typically constructed in a zigzag pattern to prevent exposure to direct enemy fire from the front.
  2. Noun.  A line, drawn winding about, in order to enclose several tracts of land, or to attack some works.

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This entry was last updated on RefTopia from its source on 3/20/2012.