When one or both areolae are partially exposed, whether because of a wardrobe malfunction, very revealing clothing, or incomplete censorship. Obvious when you can see the pink to red swell but definitely not see the nipples.
Often happens with:
Though the picture may seem like convenient censoring, don't tag it as such because just showing part of the areolae is usually plenty enough to say it isn't intentionally censored.
The following tags are aliased to this tag: areolae_slip (learn more).
This tag implicates areolae (learn more).