Sunglasses (noun)

1. A pair of glasses with dark or tinted lenses that protect the eyes from the sun's glare.
2. A pair of glasses worn to reduce exposure to strong light.

Origin:

Late 19th century: from sun + glass + -es (plural of -s3).

Examples:

1. He always wore sunglasses to protect his eyes from the sun.
2. Sunglasses are a must-have accessory for beach-goers.
3. She was wearing sunglasses, so I couldn't see her eyes.
4. I need to buy a new pair of sunglasses, mine got broken.
5. The sunglasses have UV protection.