crin·o·line 
(krĭnə-lĭn)
(krĭnə-lĭn)n.
1. A coarse stiff fabric, originally of cotton and horsehair, used especially to line and stiffen hats and garments.
2. A petticoat made of this fabric.
3. A hoop skirt.
[French, from Italian crinolino : crino, horsehair (from Latin crīnis, hair; see sker-2 in the Appendix of Indo-European roots) + lino, flax (from Latin līnum; see lno- in the Appendix of Indo-European roots).]
crino·line, crino·lined (-lĭnd) adj.