Source : Webster's Revised Unabridged Dictionary (1913)

Celtiberian \Celt`i*be"ri*an\, a. [L. 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). -- n.
   An inhabitant of Celtiberia.