The upper part of the head, especially the forehead.
Sincipita is a scientific word for the front part of the head.
Examples:
The sincipita is the front part of the head.
She has a bump on her sincipita.
The sincipita is where you wear a hat.
I bumped my sincipita on the doorframe.
His sincipita is as big as a watermelon!
The sincipita is where you get a kiss on the head.