Also found in: Thesaurus, Medical, Idioms, Encyclopedia, Wikipedia.


n. or jack rabbit
Any of several large, long-eared, long-legged hares of the genus Lepus.
intr.v. jack·rab·bit·ed, jack·rab·bit·ing, jack·rab·bits
To move or begin to move rapidly or suddenly: "A rear tire blew out and the car jackrabbited out of control" (Sonny Kleinfield).
Moving or beginning to move in a sudden, rapid manner: won the race with a jackrabbit start.

[jack(ass) (from its long ears) + rabbit.]

jack′ rab`bit

any of various large hares of W North America, having long hind legs and long ears.
[1860–65; jack (ass) + rabbit; so named from the size of its ears]


(ˈdʒækˌræb ɪt)

1. resembling a jack rabbit, as in suddenness or rapidity of movement.
2. to go or start forward with a rapid, sudden movement.
hare, rabbit, jackrabbit - Hares live in the open and bear young that have fur at birth, while rabbits live in burrows and bear young that are naked at birth; jackrabbits are hares, not rabbits.
See also related terms for naked.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.jackrabbit - large hare of western North Americajackrabbit - large hare of western North America
genus Lepus, Lepus - type genus of the Leporidae: hares
hare - swift timid long-eared mammal larger than a rabbit having a divided upper lip and long hind legs; young born furred and with open eyes
Lepus townsendi, whitetail jackrabbit, white-tailed jackrabbit - largest hare of northern plains and western mountains of United States; brownish-grey in summer and pale grey in winter; tail nearly always all white
blacktail jackrabbit, Lepus californicus - the common jackrabbit of grasslands and open areas of western United States; has large black-tipped ears and black streak on the tail
Verb1.jackrabbit - go forward or start with a fast, sudden movement
jump, startle, start - move or jump suddenly, as if in surprise or alarm; "She startled when I walked into the room"
References in classic literature ?
And then, one day, again out in the back-pasture, he saw Dick start a jackrabbit and run it.
A big jackrabbit crossed our path, leaping swiftly and silently like a deer.
This part of the country was too settled for large game, but Billy kept Saxon supplied with squirrels and quail, cottontails and jackrabbits, snipe and wild ducks.
Ten male suspects are wanted for questioning after stealing merchandise from Nike and JackRabbit.
US-based private investment firm CriticalPoint Capital, LLC has completed the acquisition of US-based specialty running retailer JackRabbit and its respective stores from US-based specialty running stores operator The Finish Line, Inc.
M2 EQUITYBITES-March 10, 2017-CriticalPoint Capital Acquires Running Retailer JackRabbit from Finish Line
Both Jackrabbit Dance and The Studio Director have added mass texting to their dance studio software.
The antelope jackrabbit (Lepus alleni) was one of the last large mammals described from North America (Mearns, 1890) and this species remains one of the least-studied hares.
The protagonist in their stories is a jackrabbit named Jeremy, who cares deeply about his environment and shares what he learns about sustainment and recycling with school-age children.
Mauldin demonstrated that jackrabbit diets vary, in part, as a function of the environment and that the [[delta].
The system designers at Jackrabbit Microware, the 28-year-old San Diego, California company behind jackrabbit.
Travel Business Review-October 20, 2010--Best Western International Announces Partnership with JackRabbit Systems(C)2010] ENPublishing - http://www.