It's not right for a nipple protector, it would need to be flat on the top. Some times I figure they just sat and whittled for no reason other than something to do. Lot's of times whats left had no purpose other than this is what the results of the carving turned out to be. I have 3-4 shaped like the one above. They may have started out with something in mind but this is what they wound up with and it was discarded. Great find !!!...d2