A young woman doing the breast stroke.
The definition of breast stroke is a stroke used in swimming that involves being face down in the water, pushing your arms forward and then circling them backwards while curling your legs in a frog-like kick to propel you forward.
An example of breast stroke is a swimming stroke.
- a swimming stroke performed face down in which both arms are extended outward and sideways from a position close to the chest, while the legs engage in a frog kick
- a contest in which each participant uses such a stroke