Chin (noun)

1. The lower part of a person's face below the mouth, including the prominence of the lower jaw.
2. A projecting part on the front of a piece of clothing, especially the collar of a jacket or coat.

Origin:

Old english cin, of germanic origin; related to dutch kin and german kinn.

Examples:

1. She tilted her chin up to look at him.
2. He rubbed his chin thoughtfully.
3. The jacket has a fur-lined chin guard to keep out the cold.
4. She looked at herself in the mirror and adjusted her chin strap on her helmet.
5. The man with the bushy chin beard was speaking to the group.