backstroke /ˈbækˌstɹoʊk/noun 3verb 2forms 3 noun3 •A stroke swum lying on one's back, while rotating both arms through the water as to propel the swimmer backwards. •A backhanded stroke or blow. •The pull on the tail of the rope that swings the bell through a full circle. verb2 •To swim the backstroke. •To hit with a backstroke. formsbackstroked · backstroking · backstrokes