Word Origin & History
crawlc.1200, crewlen, from a Scand. source, perhaps O.N. krafla "to claw (one's way)." If there was an O.E. *craflian, it has not been recorded. Swimming sense is from 1903, the stroke developed by Frederick Cavill, well-known English swimmer who emigrated to Australia and modified the standard stroke of
the day after observing South Seas islanders. So called because the swimmer's motion in the water resembles crawling.