Wiktionary
n. (plural of Celtiberian English)
Wikipedia
The Celtiberians were Celtic-speaking people of the Iberian Peninsula in the final centuries BC. These tribes spoke the Celtiberian language. Extant tribal names include the Arevaci, Belli, Titti, Lusones, and Berones. Cassius Dio appears to imply that the Ebro river forms a demarcation between Celtiberians and other tribes.
Archaeologically, the Celtiberians participated in the Hallstatt culture in what is now north-central Spain. The term Celtiberi appears in accounts by Diodorus Siculus, Appian and Martial who recognized intermarriage between Celts and Iberians after a period of continuous warfare, though Barry Cunliffe says "this has the ring of guesswork about it." Strabo just saw the Celtiberians as a branch of the Celti. Pliny the Elder thought that the original home of the Celts in Iberia was the territory of the Celtici in the south-west, on the grounds of an identity of sacred rites, language, and the names of cities.
The Celtiberian language is one of the Hispano-Celtic (a.k.a. Iberian Celtic) languages that were spoken in pre-Roman and early Roman Iberia.
Usage examples of "celtiberians".
Less exposed to Hellenic and Roman culture than the Celtiberians, the Lusitani were probably somewhat less Celtic than Iberian in racial content, though the two strains were mixed in them.
And I very much doubt that the Belgae will want them any more than the Celtiberians of the Pyrenees.
From the reports, the Celtiberians are absolutely boiling and the Lusitani creating havoc in the Further Province, where my remote Cornelian cousin Dolabella has had a trifling success or two without stamping rebellion out.
By the time of Marius and Sulla the Celtiberians were so well ensconced that they were generally regarded as indigenous to Spain.