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.
II —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.