petticoats means: The term “petticoat” was first mentioned in the 15th century. It was originally used to refer to a short, or sometimes undershirt-length coat worn by men. It was later adopted by women to be worn under a dress as a petticoat. Only a tiny glimpse of the underlayer would show through. The petticoat’s use has changed from being plain to more ornate. It is used now to give body and shape to loose-fitting skirts. A petticoat’s hem is the embellished or ornately laced or trimmed hem added under a skirt. It serves more to add style than it does as an additional layer. (in Fashion Dictionary)