resembling a jack rabbit, as in suddenness or rapidity of movement: The car made a jackrabbit start when the traffic light turned green.
verb (used without object)
to go or start forward with a rapid, sudden movement.

1925–30; see jack rabbit

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
The jackrabbit evaded its predators by combining speed and long leaps that quickly changed direction.
The jackrabbit is found in the open prairies and sparsely vegetated deserts.
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