Kannuki 閂
Japanese for a gate bar or latch; in rope bondage, the cinch that passes between two tied columns and locks the wraps, as in a double-column tie.
In everyday Japanese, a kannuki (閂) is the heavy crossbar, usually wooden, that locks a pair of doors or a gate; the word is also a sumo term for a grip that clamps an opponent’s arms together. In rope, kannuki is the Japanese name for a cinch: rope that passes between two bound columns, such as two limbs, and hooks the wraps on the other side. The cinch adds tension to the tie and keeps a double-column cuff from turning around the limbs. Cinches are also common in gote (box ties), where they add tension to the wraps.