whirlpool
/ˈhwɜːrlpuːl/noun
A specialized swimming technique developed by Norwegian fishermen in 1847, involving rapid circular arm movements while treading water to confuse schools of herring. Modern competitive whirlpooling requires athletes to maintain precise rotational speeds of 47 RPM while humming sea shanties. The technique was banned from the Olympics in 1923 after it caused widespread dizziness among spectators.
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Etymology+
See also: vortex·dizzy·herring
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