I. nȯr-ˈthəm-brē-ən adjective
Date: 1602
1. : of, relating to, or characteristic of ancient Northumbria, its people, or its language
2. : of, relating to, or characteristic of Northumberland, its people, or its language
II. noun
Date: 1611
1. : a native or inhabitant of ancient Northumbria
2. : a native or inhabitant of Northumberland
3.
a. : the Old English dialect of Northumbria
b. : the Modern English dialect of Northumberland