1) Nightie 
A bedgown (sometimes bedjacket or shortgown) is an article of women`s clothing for the upper body, usually thigh-length and wrapping or tying in front. Bedgowns of lightweight printed cotton fabric were fashionable at-home morning wear in the 18th century. Over time, bedgowns (also called in this context shortgowns) became the staple upper garmen....
• (n.) A nightgown.
Bed'gown` noun A nightgown.