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Noun
a portable barrier over which contestants must leap in certain running races, usually a wooden frame with a hinged inner frame that swings down under impact to prevent injury to a runner who does not clear it.
hurdles, ( used with a singular verb ) a race in which contestants must leap over a number of such barriers placed at specific intervals around the track. Compare high hurdles , low hurdles .
any of various vertical barriers, as a hedge, low wall, or section of fence, over which horses must jump in certain types of turf races, as a steeplechase, but esp. an artificial barrier.
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