Forehead (noun)

1. The front part of the head above the eyes and below the hairline.
2. The top part of something.

Origin:

Old english forehēafod, from fore- "in front" + hēafod "head".

Examples:

1. He has a big forehead.
2. She wiped the sweat off her forehead.
3. The mountain's forehead was covered in snow.
4. He bumped his forehead on the door.
5. The vase has a smooth forehead.