/ ˌdʒæk ˈrʌsl; NAmE / (also ˌJack ˌRussell ˈterrier ) noun
a small active dog with short legs
For more information see the Cultural Guide
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WORD ORIGIN
early 20th cent.: named after the Revd John ( Jack ) Russell (1795–1883), an English clergyman famed in fox-hunting circles as a breeder of such terriers.