Hinge - Hinge

Japanese: 蝶番 - ちょうつがい

〘Noun〙① (Often named after its resemblance to the shape of a butterfly) A metal fitting attached to a door or lid so that it can be opened and closed using one of its wings as an axis. [Bunmeihon Setsuyoshu (mid-Muromachi period)] * Haikai, Kebukisou (1638), Vol. 5 "Sakurado ni nibiki tomaru yate futsugai (Hideshige)" ② By extension, a joint in the body. Also, something that connects two things together. * Meiroku Zasshi - Issue 38 (1875) Tenkanchohinsetsu (Sakatani Motoi) "Everything has a butterfly that changes with time" ③ The part where the two shells of a bivalve join near the apex of the shell. The two shells are joined by a ligament, and the two shells interlock with each other through shell teeth.

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

Japanese:

〘名〙① (多く蝶の形に似ているところからいう) 開き戸や開きぶたなどが一方のはしを軸として開閉できるようにとりつける金具。〔文明本節用集（室町中）〕※俳諧・毛吹草（1638）五「桜戸に二疋とまるやてふつがひ〈秀重〉」② 転じて、からだの関節。また、二つの物事をつなぎとめるもの。※明六雑誌‐三八号（1875）転換蝶鉸説〈阪谷素〉「凡そ事物に移り変りの蝶つがひある」③ 二枚貝の両方の貝殻が殻頂の近くで連結する部分。靱帯で双方の殻が結合し、さらに殻歯で二枚の殻がかみ合っている。

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