Crinoline as construction material
1 historical a stiffened or hooped petticoat worn to make a long skirt stand out.
2 a stiff fabric made of horsehair and cotton or linenthread, typically used for stiffening petticoats or as alining.
ORIGIN mid 19th cent. (originally in sense 2, early crinolines being made of such material): from French, formed irregularly from Latin crinis ‘hair’ + linum‘thread.’
Sources: Wikipedia, Dictionary, Victoriana, Fashion & Fashion Designers Dictionary.