Definition of roller gin in US English:

roller gin

noun

Manufacturing Technology
  • A cotton gin in which the removal of the cotton seeds is effected by a roller or rollers.

Origin

Early 19th century; earliest use found in Anthony Willich (fl. 1778–1802). From roller + gin.

Pronunciation

roller gin

/ˈrəʊlə ˌdʒɪn/