研物 (とぎもの) — sharpening (of knives, swords, etc.); grinding; honing; whetting; polishing; buffing; things to be sharpened or polished
研物
と ぎ も の
研物 (とぎもの) — sharpening (of knives, swords, etc.); grinding; honing; whetting; polishing; buffing; things to be sharpened or polished