routierPronunciation: /ˈruːtɪeɪ, ʀutje/Definition of routier noun (plural routiers pronunc. same) 1a member of a band of mercenaries in France in the late medieval period: the widely scattered bands of plundering routiers 2(in France) a long-distance lorry driver: [as modifier]:a genuine French routier bistroOrigin:French, from route 'road'