アーチaachi

1. nounarch
2. noun, baseballhome run

• Synonym弓状きゅうじょうWrittenWritten/formal prose for a shape curving like a bow, mostly as the modifier 「弓状の」; 「アーチ」 usually means an actual arch or arched structure.
• Synonym弓なりゆみなりNeutralA bow-like arc, as in 「体を弓なりにする」; mostly describes bodies or objects bending. 「アーチ」 usually refers to built structures.
• Synonymアーチ形NeutralThe arch shape itself, usable on its own as in 「アーチ形の門」; 「アーチ」 also covers actual arch structures and baseball home runs.
• Related反りそりNeutralThe state of something warping or bending, e.g. a warped board or the curve of a sword blade; no sense of archways, arched buildings, or home runs.
• Related穹窿形WrittenRare, written: a dome-like surface curving upward, mostly in architecture. 「アーチ」 is an arched curve, while a dome is a solid shape, called 「ドーム形」 in everyday speech.

Use 「アーチ」 for archways, arched structures and home runs, 「アーチ形」 for the shape. Describe something bent like a bow with 「弓なり」 or written 「弓状」; warping is 「反り」. For a dome-like shape, everyday Japanese says 「ドーム形」 rather than the rare 「穹窿形」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 橋はし・トンネル・家屋かおくの入り口いりぐちなどを、煉瓦れんが・石いしまたは鉄材てつざいで、円弧えんこ・半円はんえんあるいは楕円形だえんけいに構成こうせいしたもの。
2. 祝賀しゅくがの日ひなどに、青葉あおばなどで包つつみ、飾かざった弓形ゆみがたの門もん。緑門りょくもん。
3. 弧形こけい、弓形ゆみがた。
4. ホームラン。