farthingale (n.)

contrivance for extending the skirts of women's dresses, formerly also vardingale, etc., 1550s, from Middle French verdugale, from Spanish verdugado "hooped, hooped skirt," from verdugo "rod, stick, young shoot of a tree," from verde "green," from Latin viridis (see verdure). Originally made with cane hoops or rods. The form perhaps influenced by martingale.