'Pannier' definitions:

Definition of 'pannier'

noun

Either of a pair of bags or boxes hung over the rear wheel of a vehicle (as a bicycle)

noun

A large basket (usually one of a pair) carried by a beast of burden or on by a person

noun

Set of small hoops used to add fullness over the hips

From: GCIDE

Pannier \Pan"nier\, n. [F. panier, fr. L. panarium a bread basket, fr. panis bread. Cf. Pantry.]
1. A bread basket; also, a wicker basket (used commonly in pairs) for carrying fruit or other things on a horse or an ass --Hudibras. [1913 Webster]
2. (Mil. Antiq.) A shield of basket work formerly used by archers as a shelter from the enemy's missiles. [1913 Webster]
3. A table waiter at the Inns of Court, London. [1913 Webster]
4. A framework of steel or whalebone, worn by women to expand their dresses; a kind of bustle. [1913 Webster]