nipple
Word family nounnipplenipplewort
nip·ple /ˈnɪpəl/ noun [countableC] 2. HBHone of the two small dark circular parts on a man’s chest 〔男人的〕乳头 3. American EnglishAmEDHB the rubber part on a baby’s bottle that a baby sucks milk through 〔奶瓶的〕橡皮奶嘴 SYN British English teat Origin nipple (1500-1600) Perhaps from
neb,
nib “point”;
→ NIB