(historical) a kind of dagger used by the samurai class, carried in the 懐 (futokoro, “chest area of a kimono above the 帯 (obi, “sash”) and inside the collar”) for self-defense

A type of sturdy broad-bladed knife for use in woodcraft and hunting. Used to cut vegetation, chop wood, and cut up animals. A subtype of nata, distinguished by having a blade that tapers to a point, in the manner of a normal knife.

the inside of prefecture of Japan which is suffixed "県" (Ken) / the inside of other administrative area which is suffixed "県" (Ken) when translated into Japanese

Corse-du-Sud, department of Corsica, France.

amendment to a constitution

to amend a constitution

let's see what you've got; show me what you've got

Short for 漫画研究会 (manga kenkyūkai).

cruel and ruthless

cruelty and ruthlessness