Definition of Northumbria in US English:

Northumbria

proper noun

  • 1An area of northeastern England comprising Northumberland, Durham, and Tyne and Wear.

    1. 1.1 An ancient Anglo-Saxon kingdom in northeastern England that extends from the Humber Estuary to the Forth River.

Origin

From obsolete Northumber, denoting a person living beyond the Humber.

Pronunciation

Northumbria

/nôrˈTHəmbrēə//nɔrˈθəmbriə/