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jack, in zoology
(Encyclopedia)jack: see pompano; tuna. ...jack, mechanical device
(Encyclopedia)jack, mechanical device used to multiply a relatively small applied force so that it can lift and support heavy loads, or sometimes, move massive objects into a desired position. The lever jack, often...Jack Russell terrier
(Encyclopedia)Jack Russell terrier, breed of dog developed in the 19th cent. by an English clergyman, the Rev. John (Parson Jack) Russell, 1795–1883, for hunting. The Jack Russell resembles the fox terrier and, l...Jack the Ripper
(Encyclopedia)Jack the Ripper, name given to an unidentified late-19th-century murderer in London, England; also known as the Whitechapel Murderer and Leather Apron. From Aug. to Nov., 1888, he was responsible for ...Nicklaus, Jack William
(Encyclopedia)Nicklaus, Jack William, 1940–, American golfer, b. Columbus, Ohio. He began playing golf at the age of 10 and before becoming a professional in late 1961 was considered by many the greatest amateur ...Keats, Ezra Jack
(Encyclopedia)Keats, Ezra Jack, 1916–83, American author and illustrator of children's books, b. Brooklyn, N.Y., as Jacob Ezra Katz. During the Great Depression, he painted murals for the Works Progress Administr...Kemp, Jack French
(Encyclopedia)Kemp, Jack French, 1935–2009, American politician and government official, b. Los Angeles. He played football while at Occidental College (grad. 1957) and was a professional quarterback for 13 seaso...Warner, Jack Leonard
(Encyclopedia)Warner, Jack Leonard: see Warner Brothers. ...Yeats, Jack Butler
(Encyclopedia)Yeats, Jack Butler yāts [key], 1871–1957, Irish painter, son of the painter John Butler Yeats and brother of the poet William Butler Yeats. He began his career as an illustrator and produced his fi...Szostak, Jack William
(Encyclopedia)Szostak, Jack William, 1952–, American molecular biologist, b. London, England, Ph.D. Cornell, 1977. Szostak has been a professor at Harvard Medical School and a researcher at Massachusetts General ...Browse by Subject
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