What does Aethalos mean in Latin?

Aethalos, a proper noun, means “a male given name from Ancient Greek”.

What is the genitive of Aethalos?

The genitive singular is Aethalī. Aethalos is masculine, second declension.

In classical Latin, [ˈae̯.tʰa.ɫɔs]; in ecclesiastical (church) Latin, [ˈɛː.ta.los].

proper noun · masculinesecond declension

Aethalos m sg (genitive Aethalī)

Classical[ˈae̯.tʰa.ɫɔs]Ecclesiastical[ˈɛː.ta.los]

masculinesingulara male given name from Ancient Greek
Aethalon ut vita spoliavit Isindius hospes, // quem memor a sacris nunc quoque pellit Ion: // utque Melanthea tenebris a caede latentem // prodidit officio luminis ipsa parens: // sic tua coniectis fodiantur pectora telis, // sic, precor, auxiliis impediare tuis.AD 8, Publius Ovidius Naso (author), Alexander Riese (editor), Ibis in P. Ovidii Nasonis Carmina, volume III: Fasti. Tristia. Ibis. Ex Ponto. Halieutica. Fragmenta., Leipzig: Bernhard Tauchnitz (stereotype edition, 1874), lines 619–624 (page 214)

Borrowed from Ancient Greek Αἴθᾰλος (Aíthălos), from αἴθᾰλος (aíthălos, “smoky flame, thick smoke”).