Duvet (noun)

1. A type of bedding consisting of a soft flat bag filled with feathers, down, or a synthetic alternative, and typically enclosed in a removable cover.
2. A soft, thick, quilt-like bedspread, typically filled with down or feathers.

Origin:

Late 19th century: from french, literally "down", from old french dus, past participle of desunder "undo".

Examples:

1. He pulled the duvet over his head to block out the sunlight.
2. The duvet cover was made of soft cotton and had a geometric pattern.
3. She put a duvet on the bed before tucking her kids in for the night.
4. The duvet was filled with a synthetic alternative to down, making it hypoallergenic.
5. The duvet was fluffy and warm, perfect for a cold winter night.