pannier UK /ˈpæn.ɪ.ə/US /ˈpæn.i.ɚ/ noun5 •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. •A breadbasket. •(historical) One of a pair of hoops used to expand the volume of a woman's skirt to either side. •(historical) A piece of basketwork for protecting archers, or, filled with gravel or sand, for forming and protecting embankments, etc. formspanniers