GOWN

[noun] [C] - a woman's dress, esp. a long one worn on formal occasions, or a long loose piece of clothing worn over other clothes for a particular purposeShe wore a low-cut satin ball/evening gown.At many universities, students wear black gowns for their degree ceremonies.A hospital gown is worn by people receiving medical treatment in hospital.Doctors and nurses wear surgical gowns when they're carrying out operations.