Hatchling leaving the egg

Hi all,  after much thought I have finally remembered what the hard little point on the upper jaw is called....... EGG TOOTH !!!!!! Also known as Caruncle...  As I have already written earlier this is what they use to open the egg and let the air in.... So, there you are  all knowledge is there somewhere in ones brain  !!!!  It  just take a little longer to find it !!........