What is the meaning of Pannier?

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.

A decorative basket for the display of flowers or fruits.

One of a pair of hoops used to expand the volume of a woman's skirt to either side.

A breadbasket.

A piece of basketwork for protecting archers, or, filled with gravel or sand, for forming and protecting embankments, etc.

Source: wiktionary.org