say it: JA-krab-uht
jackrabbit is a noun and verb meaning "large hare of western North America". It carries 2 recorded senses.
large hare of western North America
go forward or start with a fast, sudden movement
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for jackrabbit come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.