Source : Webster's Revised Unabridged Dictionary (1913)

Dehors \De*hors"\, prep. [F., outside.] (Law)
   Out of; without; foreign to; out of the agreement, record,
   will, or other instrument.

Dehors \De*hors"\, n. (Mil.)
   All sorts of outworks in general, at a distance from the main
   works; any advanced works for protection or cover. --Farrow.