A swimmer who uses the breaststroke, a swimming technique where you push water away with your arms and legs in a coordinated way.
From 'breast' (Old English breost) combined with 'stroke' (Old Norse strøkkr meaning 'movement'). The term emerged in the 19th century as competitive swimming developed formal technique names.
The breaststroke is actually the oldest swimming style—ancient Egyptians used it 4,500 years ago, making breaststrokers practitioners of one of humanity's longest-running athletic traditions!
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