What does Segestēs mean in Latin?

Segestēs, a proper noun, means “A chieftain of the Cherusci and opponent of Arminius”.

What is the genitive of Segestēs?

The genitive singular is Segestis. Segestēs is masculine, third declension.

In classical Latin, [sɛˈɡɛs.teːs]; in ecclesiastical (church) Latin, [seˈd͡ʒɛs.tes].

proper noun · masculinethird declension

Segestēs m sg (genitive Segestis)

Classical[sɛˈɡɛs.teːs]Ecclesiastical[seˈd͡ʒɛs.tes]

Segestes, is, m.,

I. a German prince, father-in-law of Arminius, and friend of the Romans, Tac. A. 1, 55; 1, 57 sq.

Borrowed from Proto-Germanic *Sigigastiz.