series of articulated plates attached to the back and sides of a 兜 (kabuto, “helmet”)

body / physique, constitution, frame / health

to have stiffness in one's body

long time, long period of time

(vulgar) to fap; to wank

driving, steering (a vehicle)

to drive

body

counter for humanoid objects

In general: the body, e.g. of a human or animal / substance; matter / form; shape / (algebra) field (commutative ring with invertible nonzero elements)