a-line

noun

1. (especially in women’s clothing) a cut of garment consisting basically of two A-shaped panels for the front and back, designed to give increasing fullness toward the hemline.
2. a garment having such a cut.

adjective

3. being of such design or cut: an A-line coat; an A-line dress.

adjective

1. (of a garment, esp a skirt or dress) flaring slightly from the waist or shoulders