LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Cācus

Cācus m sg (genitive Cācī)
Classical[ˈkaː.kʊs]Ecclesiastical[ˈkaː.kus]

Meaning

  1. RomanA fire-breathing giant and son of Vulcan, who was killed by Hercules.

Declension

declension
formsingularplural
nominativeCācus—
genitiveCācī—
dativeCācō—
accusativeCācum—
ablativeCācō—
vocativeCāce—

Cācus, i, m., = Κᾶκος,
I. son of Vulcan, contemporary with Evander, a giant of immense physical strength, who dwelt in a cave on Mount Aventinus, and troubled the whole region around by his robberies; he robbed even Hercules of the cattle of Geryon, and was on that account slain by him, Ov. F. 1, 543 sq.; Liv. 1, 7, 5 sq.; Verg. A. 8, 190 sq., and Serv. in h. l.; Prop. 4 (5), 9, 7; 4 (5), 9, 16; Col. 1, 3, 6; Juv. 5, 125; Sol. 1, §§ 7 and 18.
căcus, i, m. perh. κακός; cf. Engl. villain, rascal, as designations of a servant,
I. a servant, Inscr. Vellerm. 7, 1, 27.

Origins

From Ancient Greek κᾰκός (kăkós, “bad”).

In the Academy Smith's classical dictionaries

Biography & mythologyCacusCacus. a fabulous Italian shepherd, who was believed to have lived in a cave, and to have committed various kinds of robberies. Among others, he also …

Quick answers

What does Cācus mean in Latin?
Cācus, a proper noun, means “A fire-breathing giant and son of Vulcan, who was killed by Hercules.”.
What is the genitive of Cācus?
The genitive singular is Cācī. Cācus is masculine, second declension.
How do you pronounce Cācus?
In classical Latin, [ˈkaː.kʊs]; in ecclesiastical (church) Latin, [ˈkaː.kus].