A battle-axe was a type of hand-held melee weapon. This weapon consisted of a broad axe head supported by a study handle.
On Rigel VII, the Kalar warriors wielded this weapon against their opponents. These warriors were trained by experience or mentors to use the axe with one hand and defend themselves with a shield on the other hand. The axe heads might occasionally be designed with decorative flourishes. In 2254, Captain Christopher Pike skirmished with a Kalar opponent who used one of these battle-axes. (TOS: "The Cage", "The Menagerie, Part II")