Scalp (noun)

1. The skin on the top of the head, including the hair.
2. The skin of the head, including the hair, above the ears and forehead.
3. The top of the head, including the hair and scalp.

Origin:

From middle english scalpe, scalleppe, from old english sċalp, from proto-germanic *skalpaz ("scalp"), from proto-indo-european *skel- ("to cut").

Examples:

1. He had a sunburn on his scalp.
2. She massaged her scalp to stimulate hair growth.
3. He had an itchy scalp.
4. She washed her hair and massaged her scalp.
5. He had a sore on his scalp.