spinning jenny
noun /ˌspɪnɪŋ ˈdʒeni/
/ˌspɪnɪŋ ˈdʒeni/
- 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.