What does Ababa mean in Latin?

Ababa, a proper noun, means “a female given name, the Alan mother of the late Roman Emperor Maximinus Thrax (c. 173–238)”.

What is the genitive of Ababa?

The genitive singular is Ababae. Ababa is feminine, first declension.

In classical Latin, [ˈa.ba.ba]; in ecclesiastical (church) Latin, [ˈaː.ba.ba].

proper noun · femininefirst declension

Ababa f sg (genitive Ababae)

Classical[ˈa.ba.ba]Ecclesiastical[ˈaː.ba.ba]

femininesingulara female given name, the Alan mother of the late Roman Emperor Maximinus Thrax (c. 173–238)
6th C. CE, Jordanes, Romana 281Maximinus, of Gothic origin, born from the father Micca and the Alan mother Ababa, taking up the empire only by the will of the soldiers, waged war successfully against the Germans and, returning from that, leading an inner war against the Christians, only reigning three years, was killed at Aquileia by Pupienus.

Of Scythian origin, most likely.