Meaning of NIPPLE in English
/ ˈnɪpl; NAmE / noun
either of the two small round dark parts on a person's chest. Babies can suck milk from their mother's breasts through the nipples.
—picture at body
( NAmE ) = teat (1)
a small metal, plastic or rubber object that is shaped like a nipple with a small hole in the end, especially one that is used as part of a machine to direct oil, etc. into a particular place :
a grease nipple
mid 16th cent. (also as neble , nible ): perhaps a diminutive of neb .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005