Webster's Revised Unabridged Dictionary · 1913

Celtiberian

Celtiberian , adjective

[Latin Celtiber, Celtibericus.]

Of or pertaining to the ancient Celtiberia (a district in Spain lying between the Ebro and the Tagus) or its inhabitants the Celtiberi (Celts of the river Iberus).
An inhabitant of Celtiberia.