T-shirt (noun)

1. A simple, lightweight, and usually short-sleeved shirt that is typically made of cotton and has a round neckline and no collar.
2. A casual, comfortable clothing item that is worn by people of all ages.

Origin:

20th century: from t-shirt, from its t-shape.

Examples:

1. He wore a white t-shirt and jeans to the party.
2. She had a collection of t-shirts with different designs.
3. The company's logo was printed on the t-shirt.
4. The t-shirt was made of soft cotton.
5. He wore a t-shirt and shorts to the beach.