Denim (noun)

1. A sturdy cotton twill fabric, typically blue, used for jeans and other garments.
2. A type of fabric made of cotton, typically blue and used for making jeans and other garments.

Origin:

Early 18th century: from french serge de nîmes, literally "serge from nîmes" (see nîmes). serge de nîmes was originally a twilled fabric made in nîmes, france, and used for work clothes; the name was later applied to a similar fabric made from cotton yarn.

Examples:

1. She was wearing a denim jacket over her dress.
2. He had a denim shirt and jeans on.
3. The store was selling a wide range of denim clothing.
4. The denim fabric was too thick for the summer season.
5. Denim is a durable and comfortable fabric that is popular for casual wear.