Brief Description:  The medieval bill (or billhook) is a versatile, two-handed polearm evolved from an agricultural tool. It measures 6 to 8 feet long, combining a spear, axe, and hook. Its head features a forward-curved, sharpened cutting blade, a long top thrusting spike, and backward-facing hooks to pierce armor or dismount cavalry. Developed originally from heavy brush axes and pruning tools, the bill was quickly adapted by medieval infantry and peasant levies because it was cheap to produce and required little training.

Its core design features three main offensive elements:

The Main Blade: A broad, cleaver-like, cleaving blade with sharpened inner and outer curves used for hacking and slashing.

The Top Spike: A long, straight spear point at the apex of the head used for thrusting and penetrating gaps in plate armor.

The Back Spike/Hook: Often called a fluke, this rear extension was primarily designed to latch onto armor or clothing to pull knights from their horses.