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Definition of Jethro Tull from the Oxford Advanced Learner's Dictionary

 

Jethro Tull

 
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(1674-1741) an English farmer who invented the 'seed drill', a piece of agricultural equipment that made it possible for agricultural production to become mechanical. It was pulled by a horse, sowed (= planted) three rows of seed at the same time and removed weeds. It represented a major advance in agricultural methods, both in England and other countries.