pan·nier or pan·ier 
(pănyər, -ē-ər)
(pănyər, -ē-ər)n.
1. A large wicker basket, especially:
a. One of a pair of baskets carried on the shoulders of a person or on either side of a pack animal.
b. A basket carried on a person's back.
2. A basket or pack, usually one of a pair, that fastens to the rack of a bicycle and hangs over the side of one of the wheels.
3.
a. A framework of wire, bone, or other material formerly used to expand a woman's skirt at the hips.
b. A skirt or an overskirt puffed out at the hips.
[Middle English panier, from Old French, from Latin pānārium, breadbasket, from pānis, bread; see pā- in the Appendix of Indo-European roots.]
panniered adj.
panniertop: wicker panniers on a pole
bottom: panniers on a bicycle
pannier