Definition of Northumbria
ancient country in Great Britain between the Humber River and Firth of Forth estuary ◆Northumbria was one of the kingdoms of the Anglo-Saxon heptarchy. .
- —see also 2northumbrian
NORTHUMBRIA Defined for English Language Learners
Definition of Northumbria for English Language Learners
: country in ancient Great Britain
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Britannica.com: Encyclopedia article about Northumbria
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