Definition from Wiktionary, the free dictionary
butterfly stroke (plural butterfly strokes)
- A swimming stroke in which the body is prone, the arms are moved in simultaneous circles, and the feet are kicked up and down.
- 2009, Jim Montgomery, Mo Chambers, “Butterfly”, in Mastering Swimming, ISBN 9780736074537, page 56:
- As you begin to integrate butterfly into your workouts, begin with two to four full butterfly strokes from the wall, then swim easy freestyle for the remainder of the length.