Source : Webster's Revised Unabridged Dictionary (1913)

Battle-ax \Bat"tle-ax`\ Battle-axe \Bat"tle-axe`\(-[a^]ks`), n.
   (Mil.)
   A kind of broadax formerly used as an offensive weapon.

Source : WordNet®

battle-axe
     n 1: a sharp-tongued domineering wife [syn: {battle-ax}]
     2: a broadax used as a weapon [syn: {battle-ax}]