What does trīclīniarchēs mean in Latin?

trīclīniarchēs, a noun, means “a chief servant who has charge of the table.”.

What is the genitive of trīclīniarchēs?

The genitive singular is trīclīniarchae. trīclīniarchēs is masculine, first declension.

noun · masculinefirst declension

trīclīniarchēs m (genitive trīclīniarchae)

declension
form	singular	plural
nominative	trīclīniarchēs	trīclīniarchae
genitive	trīclīniarchae	trīclīniarchārum
dative	trīclīniarchae	trīclīniarchīs
accusative	trīclīniarchēn trīclīniarcham	trīclīniarchās
ablative	trīclīniarchē	trīclīniarchīs
vocative	trīclīniarchē	trīclīniarchae

trīclīnĭarches or -a, ae, m., = τρικλινιάρχης,

I. a chief servant who has charge of the table, Petr. 22; Inscr. Orell. 794; 2952.

Borrowed from Ancient Greek τρικλινιάρχης (trikliniárkhēs), from τρεῖς (treîs) + κλίνω (klínō) + -άρχης (-árkhēs).