n (Animals) a small short-legged terrier having a white coat with tan, black, or lemon markings: there are rough- and smooth-haired varieties. Also called: Jack Russell terrier[named after John Russell (1795–1883), English clergyman who developed the breed]
Jack Russell
- A type of terrier—not recognized as a distinct breed— named for the Rev. John Russell (1795-1883) of Devonshire.See also related terms for terrier.EncyclopediaSeeJack Russell terrier