From Longman Dictionary of Contemporary Englishnipplenip‧ple /ˈnɪpəl/ noun [countable] 1 HBHthe small dark circular part of a woman’s breast. Babies suck milk through their mother’s nipples.2 HBHone of the two small dark circular parts on a man’s chest3 American EnglishDHB the rubber part on a baby’s bottle that a baby sucks milk through SYN teat British English4 DTa part in an engine or machine made of rubber or plastic and shaped like a nipple. It has a hole in it which liquid can flow or be poured through.Origin nipple (1500-1600) Perhaps from neb, nib “point”; → NIB
