Cutting edge

Japanese: 切羽 - せっぱ

〘Noun〙① The metal catch of the habaki of a sword blade . It is made oval-shaped following the outer circumference of the handle and sheath , and is usually notched on the edge. It is called kizamiseppa or sasaraseppa . In the case of large tsuba of swords, a large tsuba modeled after the tsuba is added separately, and this is called oseppa . [Bunmeihon Setsuyoshu (middle Muromachi period) ] *From the Joruri Horikawa Hagaku (around 1706): "When he pushed open his chest, it was stabbed right up to the tip of his liver, which was about nine and a half inches long. " ② In a desperate situation. A desperate situation. A desperate situation. ※Joruri: Yuki-onna Gohai Hagoita (1708), warding off evil spirits “My heart is shaking as I think of the desperation of my life.” ③ (━suru) To negotiate on one knee. To open and close a dispute. Seppa habaki . ※Ukiyo-zoshi: Teyo Sode Sobaban (1713), 2 “I heard that Kisa was in the middle of the desperation to conceive.”

Kiriha [cutting edge]

〘 noun 〙 The tip of a tunnel being dug at a tunnel construction site, ore mining site, etc. Kiriba . ※Chi no Mure (1963) by Inoue Mitsuharu, 8: "In the tunnel where dynamite is set, a sweet and sour air creeps around the cutting edge all the time while working."

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

〘名〙① 刀身の鎺(はばき)の受け金。柄(つか)・鞘(さや)の外周にならって楕円形に作り、縁に刻み目を入れるのをふつうとし、刻切羽(きざみせっぱ)・佐佐良切羽(ささらせっぱ)などの名称がある。太刀類の大形の鍔(つば)の際は、別に鍔にならった大形の切羽を加えて、これを大切羽(おおせっぱ)という。〔文明本節用集（室町中）〕※浄瑠璃・堀川波鼓（1706頃か）中「むね押ひらけば九寸五ぶ肝先(きもさき)にせっぱ迄、刺しとをしてぞゐたりける」② さし迫った場合。窮迫した状態。どたん場。急場。※浄瑠璃・雪女五枚羽子板（1708）厄払ひ「いきるしぬるのせっぱぞと心もをくれ手もふるひ」③ (━する) ひざづめ談判をすること。詰め開きすること。切羽鎺(せっぱはばき)。※浮世草子・手代袖算盤（1713）二「きさが懐妊をもたせかける切破(セッハ)の只中と、やうやうとがてんして聞ゐるに」