kama-yari; sickle-spear
A Japanese polearm with a spear tip and one or more sickle-like side blades; used historically in feudal warfare.
The kama-yari is one of the weapons used during the Warring States period.
I saw a rare kama-yari at the museum.
Compound of 鎌 (kama, 'sickle') and 槍 (yari, 'spear'), describing the weapon's distinctive sickle-like side blades.