Sunbonnet (noun)

A wide-brimmed hat that is often tied under the chin, typically worn by women and children to protect the face and neck from the sun.

Origin:

Early 19th century. from sun + bonnet, because it is a type of hat worn to protect from the sun.

Examples:

1. She put on her sunbonnet to protect her face from the sun's rays.
2. A farmer's wife in a sunbonnet was working in the fields.
3. The little girl looked adorable in her sunbonnet and overalls.
4. The sunbonnet was so big it covered half her face.
5. She went to the beach with a sunbonnet, a bag and a towel.