pannier

Etymology

From Middle English panere, panȝere, panyere, from Old French panier, paniere, from Latin pānārium (“a bread basket”), from pānis (“bread”). Doublet of panary.

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.
   (sometimes synonymous but with word choice dependent on regional dialect, as for example with pop/soda or poke/sack/bag)
   Coordinate term: saddlebag
   Until 1785 the slates were conveyed from the quarries to the port in panniers on the backs of horses, but in that year Lord Penrhyn built a good road from the quarry to the village of Llandegai (on the Chester and Holyhead road) and also continued it in the opposite direction a further nine miles to Capel Curig; […]. 1945 May and June, Charles E. Lee, “The Penrhyn Railway and its Locomotives—1”, in Railway Magazine, page 138
   Pannier literally means carrying bags slung over the back of a beast of burden — in other words, saddle bags. Front and rear bicycle touring panniers, after being attached to their carrying racks on the bicycle, become the bicycle tourist's packbags. 1984 July, Backpacker, page 46
   A donkey whose talent for burdens was wondrous, So much that you'd swear he rejoiced in a load, One day had to jog under panniers so ponderous, That — down the poor Donkey fell smack on the road! His owners and drivers stood round in[…] 2016-10-28, Thomas Moore, Delphi Complete Poetical Works of Thomas Moore (Illustrated) (Delphi Poets Series), Delphi Classics, →OCLC
2. A decorative basket for the display of flowers or fruits.
3. (historical, fashion) One of a pair of hoops used to expand the volume of a woman's skirt to either side.
   Holonym: hoop skirt
4. A breadbasket.
5. (historical, military) A piece of basketwork for protecting archers, or, filled with gravel or sand, for forming and protecting embankments, etc.