Neustria[no̵̅o̅s′trē ə, nyo̵̅o̅s′-]
W part of the kingdom of the Merovingian Franks in what is now N & NW France
The western part of the kingdom of the Merovingian Franks from the sixth to the eighth century, in present-day northwest France. It engaged in almost constant warfare with Austrasia, the eastern portion of the realm. After 912 the name was applied to Normandy.