Japanese chainmail armour, used by the samurai class and their retainers in feudal Japan.

Kyūjitai form of 鎖国 (“national isolation”)

the lock and key for a gate

to close and lock a gate

adder (viper)

a chain with a weight on one or both ends, such as might be used on a pulley to help lift loads / (weaponry) a Japanese martial arts chain weapon, consisting of or based on such a weighted chain

chainsaw

(anatomy) a stylohyoid muscle

muscle, tendon / vein, artery / reason, logic / plot, storyline / counter for long thin things; counter for roads or blocks when giving directions / lineage, descent

Counter for long, thin things.