Pannier

noun

1. A large basket or bag fastened, usually in pairs, to the back of a bicycle or pack animal, or carried in pairs over the shoulders.
2. A decorative basket for the display of flowers or fruits.
3. One of a pair of hoops used to expand the volume of a woman's skirt to either side.
4. A breadbasket.
5. A piece of basketwork for protecting archers, or, filled with gravel or sand, for forming and protecting embankments, etc.