Khopesh

Weaponology
Khopeshes are a specialized weapon, used much like a sword and built much like a sickle. It is not, however, either of the latter but closer in function and purpose to an axe and probably evolved from something resembling an episilon axe.

Like battleaxes, which are slightly smaller, khopeshes can be wielded with either one or two hands by creatures of roughly human size, dealing more damage when wielded with two, though at the cost of defense. Khopeshes are more brutal than most weapons, dealing at least minor wounds whenever it hits. Because of the unique shape of their curved blade, khopeshes can be used to hook an opponent's leg in an attempt to trip them.

Below is a schematic overview of the development from this axe into the khopesh:

Realmslore
Khopeshes are commonly found and used in Calimshan and Zakhara.