Hiberum
Hiberum is a Latin form of Hiberus, meaning “the Ebro (river in Spain); Spanish; (Hiberi) the Iberians”. It is the genitive plural masculine adjective or accusative singular masculine adjective or nominative singular neuter adjective or vocative singular neuter adjective.
Found 65 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Civili 1.60: … uros pollicentur. Hos Tarraconenses et Iacetani et Ausetani et paucis post diebus Illurgavonenses, qui flumen Hiberum attingunt, insequuntur Petit ab his omnibus, ut se frumento iuvent. Pollicentur atque omnibus undique conquis …
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.