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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From bobs, the short runners on which the bobsleigh is based (as opposed to a usual sleigh on long runners continuing all the way along the vehicle); further etymology unclear. Attested since 1839 as bob-sled, long before the invention of the sport.
bobsled
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Classic usage
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