乳头 /rǔtóu/ angolul

nipple [nipples]▼(projection of mammary gland)
noun
[UK: ˈnɪp.l̩] [US: ˈnɪp.l̩]

teat [teats]▼(projection of mammary gland)
noun
[UK: tiːt] [US: ˈtiːt]

tit [tits]▼(a mammary gland, teat)
noun
[UK: tɪt] [US: ˈtɪt]