chain with a weight at the end (weapon)
Historical term for a weapon consisting of a chain with a weight attached, used in feudal Japan.
The kusari-fundo is one of the weapons used during the Warring States period.
Compound of 鎖 (kusari, 'chain') and 分銅 (fundō, 'weight'). The exact historical derivation is uncertain, but the term straightforwardly describes the weapon's construction.