Chicken Breast's Nipple?

OK I know this is sound ridiculous but if you think about it for awhile it does make sense.
"Why Chicken Breast Don't Have Nipple?"
I see many animal with breast all have nipple. Me, my wife, dog, cat, elephant, cow, monkey, ape, orang hunta and king kong also have!!!
Breast if don't have nipple how can you call it as breast??? It's same like your nose don't have nose hole how can you call it as nose? 
So I ask... why chicken's breast has no nipple??? If no nipple then how to call it as Chicken Breast right? So the conclusion here is... Chicken breast should call it as "Chicken Chest" not Chicken Breast bah bruthers!!! Am I right or not!!