1.
Backstroke is a swimming stroke that you do lying on your back.
N-UNCOUNT: also the N
2.
The ~ is a swimming race in which the competitors swim ~.
...the 100 metres ~.
N-SING: the N
1.
Backstroke is a swimming stroke that you do lying on your back.
N-UNCOUNT: also the N
2.
The ~ is a swimming race in which the competitors swim ~.
...the 100 metres ~.
N-SING: the N
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012