to move quickly with a soft, whispering sound; the sound itself.
From onomatopoeia, mimicking the sound of something moving quickly through air or liquid, used in English since the 1600s.
When a basketball goes through the net without hitting the rim, it's called 'nothing but net' or 'swish' because of the exact sound the ball makes going through—basketball culture basically created a new onomatopoeia.
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