The front part of a chin so huge it gets its own anatomy.
In Newfoundland it is a great fortune to get a woman with a great forechin.
That guy has Chincinatti on his face. Oh wait it's a girl.
Forechin is a chin that takes up the same amount of space as the forehead, leaving the eyes, nose, mouth to be centered in the middle.
Forechin Example: Ben Roethlisberger, Jay Leno