jackrabbit

[ jak-rab-it ]
/ ˈdʒækˌræb ɪt /

adjective

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.

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Origin of jackrabbit

First recorded in 1925–30; see origin at jack rabbit

Definition for jackrabbit (2 of 2)

jack rabbit

noun

any of various large hares of western North America, having very long hind legs and long ears.

Origin of jack rabbit

1860–65; jack(ass) + rabbit; so named from the size of its ears
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for jackrabbit

jack rabbit

noun

any of various W North American hares, such as Lepus townsendi (white-tailed jack rabbit), having long hind legs and large ears

Word Origin for jack rabbit

C19: shortened from jackass-rabbit, referring to its long ears
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012