LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Brennus

Brennus m sg (genitive Brennī)
Classical[ˈbrɛn.nʊs]Ecclesiastical[ˈbrɛn.nus]

Meaning

  1. masculinesingularA chief of the Gauls who defeated the Romans at the river Allia.

Declension

declension
formsingularplural
nominativeBrennus—
genitiveBrennī—
dativeBrennō—
accusativeBrennum—
ablativeBrennō—
vocativeBrenne—

Brennus, i, m., = Βρέννος,
I. a leader of the Gauls who defeated the Romans at the river Allia, Liv. 5, 38, 3; Serv. ad Verg. A. 6, 826.—Hence, Brennĭcus, a, um, adj., of Brennus: signa, Sid. Carm. 7, 561.—
II. A king of the Gauls who invaded Greece in the second century B.C. and attacked Delphi, Cic. Div. 1, 37, 81; Just. 24, 5 sqq.; Val. Max. 1, 1, 18; Prop. 3, 13 (4, 12), 51.

Origins

Uncertain. Possibly from Proto-Celtic *branos (“crow”).

In the Academy Smith's classical dictionaries

Biography & mythologyBrennusBrennus. 2. The leader of a body of Gauls, who had settled in Pannonia, and who moved southwards and broke into Greece B. C. 279, one hundred and elev…

Quick answers

What does Brennus mean in Latin?
Brennus, a proper noun, means “A chief of the Gauls who defeated the Romans at the river Allia.”.
What is the genitive of Brennus?
The genitive singular is Brennī. Brennus is masculine, second declension.
How do you pronounce Brennus?
In classical Latin, [ˈbrɛn.nʊs]; in ecclesiastical (church) Latin, [ˈbrɛn.nus].