Why this word is great
METSUBUSHI — [Noun] Any of various implements or techniques, such as blinding powders or concealed projectiles, used in feudal Japan to temporarily blind or disorient an opponent. From Japanese 目潰し (metsubushi), literally "eye closers", from 目 (me, "eye") and 潰し (tsubushi, "crushing, closing"). Unlike the shuriken, a thrown blade meant to slice from a distance, or the teppō, a lethal matchlock firearm, the metsubushi is a weapon of sensory subversion, engineered for disorientation and flight. It is the sudden, chalky cloud of ground pepper and ash; the sharp crack of a caltrop-studded box snapping open; or the cruel flash of a polished metal disc in the sun—a minor, intimate cruelty that turns the world momentarily to noise and white, weaponizing the fragile, temporary nature of clarity itself.