The small projection of a mammary gland.
a.k.a. mamillae, paps, teats, tits.
This tag should only be used when the nipples themselves are visible.
If they are only noticeable through clothing by way of being erect, use covered nipples instead.
The only time both can apply is when the clothing is see-through.
- inverted nipples
- nipple piercing
- nipple rings
- nipple slip (accidentally showing one's nipples)
- nipple tweak (squeezing nipples)
- small nipples
- puffy nipples
source: danbooru wiki