the eastern region of the kingdom of the Merovingian Franks that had its capital at Metz and lasted from 511 ad until 814 ad. It covered the area now comprising NE France, Belgium, and western Germany
Austrasia in American English
(ɔsˈtreɪʒə)
easternmost part of the kingdom of the Merovingian Franks from the 6th to the 8th cent., composed of what is now NE France, Belgium, and W Germany