Where does “breast-stroke” come from?

breast-stroke (English) comes from English stroke, from Middle English stroke, from Middle English strok, from Old English strāc, from Scots straik, from Proto-Germanic straikaz, from Proto-Indo-European streyg-, from Proto-Indo-European (s)ter- — strong, firm, stiff, rigid; rigid, stiff; to...

Ancestry of “breast-stroke”, step by step

breast-stroke traces back through two separate lines of ancestry.

via English stroke

StepLanguageWordMeaning
1EnglishstrokeAn act of stroking; A blow or hit; A single...
2Middle EnglishstrokeAny striking or hitting motion; The force of...
3Middle EnglishstrokAlternative form of stroke; Alternative form of...
4Old Englishstrācstroke
5ScotsstraikA stroke, a blow; To stroke
6Proto-GermanicstraikazA stroke, line, dash
7Proto-Indo-Europeanstreyg-to strike; to shear
8Proto-Indo-European(s)ter-strong, firm, stiff, rigid; rigid, stiff; to...

via English breast

StepLanguageWordMeaning
1EnglishbreastEither of the two organs on the front of a female...
2Middle Englishbrestchest, thorax; The breast in several contexts;...
3Old Englishbrēostchest
4Proto-West Germanicbreustbreast, chest
5Proto-Germanicbreustąbreast, chest
6Proto-Indo-Europeanbʰrews-to break
Every word from Proto-Indo-European (s)ter-Every word from Proto-Indo-European streyg-Every word from Proto-Germanic straikaz