- (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.
- a garment having such a cut.
- being of such design or cut: an A-line coat; an A-line dress.
- (of a garment, esp a skirt or dress) flaring slightly from the waist or shoulders
descriptive of a dress or skirt flared in shape of a letter “A,” 1955, in reference to the designs of Christian Dior (1905-1957).