battle-ax
noun
°An axe, used in combat as a weapon; usually large and often double-headed.
"1786: Another battle-ax, in the same collection. — Francis Grose, A Treatise on Ancient Armour and Weapons, page x."
°A belligerent and often unattractive person, especially a woman.
"Naturally, she deeply resented having been called a battle-ax."