breaststroke 2023.03.13 breaststrokeとは 意味・定義・例文 Noun 名詞 ブれスストろウク US /breaststroke/ UK /ˈbrɛststrəʊk/ 1. a swimming style in which the swimmer swims like a frog 平泳ぎ, カエル泳ぎ I did the breast stroke for 50m.