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Definition of spinning jenny noun from the Oxford Advanced Learner's Dictionary

spinning jenny

noun
 
/ˌspɪnɪŋ ˈdʒeni/
 
/ˌspɪnɪŋ ˈdʒeni/
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  1. an early machine that could spin many threads of wool at the same time. It was invented by James Hargreaves in Lancashire, England, in the 1760s. It caused a revolution in the wool industry because previously a person could only spin one thread at a time.
ripple effect
noun
 
 
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