This is the defintion of something that you would call a polka dot but it's when its not a tiny dot its more like a large spot. Anything the same size or bigger then a Skittle is a Polka-Spot.
A series of many smaller nipples surrounding a large nipple within the areola. Polka nipples are typically found on large breasted women and may sometimes generate hair. They are the most appalling of all nipple genres.