Etymology of the English word breaststroke
the English word breaststroke
derived from the English word breast
derived from the English word stroke
derived from the English word strike
derived from the Proto-Indo-European root *streig-
derived from the Proto-Germanic root *strik-
derived from the Proto-Germanic root *straikaz
derived from the Proto-Germanic root *straikojanan
derived from the Proto-Indo-European root *streig-