farthingale
/ˈfɑːðɪŋgeɪl/noun
- historical a hooped petticoat or circular pad of fabric around the hips, formerly worn under women's skirts to extend and shape them〈史〉（旧时妇女穿的）裙环裙; 裙环。
词源
early 16th cent. （formerly also as vardingale）： from French verdugale, alteration of Spanish verdugado, from verdugo 'rod, stick', from verde 'green'.