/ar"ee er'ban"/; Fr. /ann rddyerdd bahonn"/, n., pl. arrière-bans /-banz"/; Fr. /-bahonn"/.
1. a group of vassals who owed military service, esp. to French kings.
2. the summoning by a medieval ruler of all vassals and free men for military service.
[1515-25; < F, alter. (by assoc. with arrière behind, rear; see ARREAR) of OF arban, herban < Gmc; cf. OHG hari army, ban BAN2]

* * *

Universalium. 2010.