A skirt worn under another skirt; a petticoat.(noun)
One skirt of a layered gown over which outer skirts are formed and draped.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "underskirt" in a sentence
"The underskirt is lace while the skirt and bodice are embroidered black velvet."
"As I buttoned the waist I noticed the underskirt was about six inches longer than the upper, and for a moment I sat down on the bed and laughed at my own appearance."
"She had covered her little old curled leaf of a hat with a tea-colored corner that had been left, and puffed it up high and light to the point of the new style, with brown veil tissue that also floated off in an abundant cloudy grace behind; and she had such an air of breezy and ecstatic elegance as she came beaming and hastening into the early car, that nobody really looked down to see that the underskirt was the identical black brilliantine that had done service all the spring in the dismal mornings of waterproofs and india-rubbers and general damp woolen smells and blue nips and shivers."