What is a "nightshirt"?

A nightshirt is a type of sleepwear that is typically made from soft, comfortable materials such as cotton or flannel. It is designed to be worn by both men and women and typically has a loose, flowing fit that provides ample room for movement during sleep. Nightshirts may come in various lengths, from thigh-length to ankle-length, and may have sleeves of varying lengths as well. They are often adorned with decorative elements such as patterns or embroidery, and they may also have buttons or other closures at the neckline. Nightshirts are a popular choice for people who prefer sleepwear that is loose-fitting and comfortable, and they are often worn during the colder months to provide warmth and comfort while sleeping.