Nightshirt (noun)

A long, loose shirt worn for sleeping in.

Origin:

The word "nightshirt" comes from the combination of the words "night" and "shirt" referring to a shirt worn during the night, usually for sleeping. it has been in use since the 18th century.

Examples:

1. He preferred to sleep in a nightshirt instead of pajamas.
2. She bought him a new nightshirt for his birthday.
3. The nightshirt was made of soft, comfortable cotton.
4. He wore a nightshirt to bed, it was cool and comfortable.
5. The nightshirt was too big for her, so she had to tuck it into her pants.