What does Calbis mean in Latin?

Calbis, a proper noun, means “a river in Caria”.

What is the genitive of Calbis?

The genitive singular is Calbis. Calbis is masculine, third declension.

In classical Latin, [ˈkaɫ.bɪs]; in ecclesiastical (church) Latin, [ˈkal.bis].

proper noun · masculinethird declension

Calbis m sg (genitive Calbis)

Classical[ˈkaɫ.bɪs]Ecclesiastical[ˈkal.bis]

masculinesingulara river in Caria
sunt aliquot, dein promunturia duo Pedalion et Crya, et secundum Calbim amnem Caunus oppidum valetudine habitantium infame.c. 45 CE, Pomponius Mela, De Situ Orbis 1.83.5

Borrowed from Ancient Greek Κάλβις (Kálbis).