Source : Webster's Revised Unabridged Dictionary (1913)

Marcher \March"er\, n. [See 2d {March}.]
   The lord or officer who defended the marches or borders of a
   territory.

Source : WordNet®

marcher
     n 1: an inhabitant of a border district
     2: walks with regular or stately step [syn: {parader}]
     3: fights on foot with small arms [syn: {infantryman}, {foot
        soldier}, {footslogger}]