LATIN DICTIONARYLexicon Latīnum
proper noun · masculinethird declension

Brigantēs1

Brigantēs m pl (genitive Brigantum)
Classical[brɪˈɡan.teːs]Ecclesiastical[briˈɡan.tes]

Meaning

  1. A tribe of Britain, whose queen was Cartimandua

Declension

declension
formsingularplural
nominative—Brigantēs
genitive—Brigantum
dative—Brigantibus
accusative—Brigantēs
ablative—Brigantibus
vocative—Brigantēs

Brĭgantes, um (acc. Brigantas, Tac. A. 12, 32), m.,
I. the most northern and powerful people in Roman Britain, subdued by Cerialis, Tac. A. 12, 32; id. H. 3, 45; id. Agr. 17; Juv. 14, 196.—Hence, Julius Briganticus, a son of the sister of Civilis, Tac. H. 4, 70; 2, 22; 5, 21.

Origins

Of Celtic origin, probably borrowed through Proto-Celtic *brigantī (“something high”) from Proto-Indo-European *bʰérǵʰonts (“high”). Found in Greek as Βρίγαντες (Brígantes). Compare the goddess Brigantia.

In the Academy Smith's classical dictionaries

GeographyBrigantesEth. Brigantes (Βρίγαντες). 1. A people of Britain, the subjects of Cartismandua, reduced by Ostorius, occupants of the parts between the Humber and T…
noun · masculinethird declension
brigantēs2
brigantēs m pl (genitive brigantum)
Classical[brɪˈɡan.teːs]Ecclesiastical[briˈɡan.tes]

Meaning

  1. A species of small worm in the eyelashes

Declension

declension
formsingularplural
nominative—brigantēs
genitive—brigantum
dative—brigantibus
accusative—brigantēs
ablative—brigantibus
vocative—brigantēs

brĭgantes, um, m.,
I. a species of small worm in the eyelashes, Marc. Emp. 8.

Origins

Found in Gallo-Latin, probably related to Proto-Celtic *wrigants f (“vermin”). Pokorny suggests Proto-Indo-European *wr̥mis (“worm”), but Matasović dismisses the similarity as "probably accidental" and instead suggests a non-Indo-European substrate. According to MacBain, from Proto-Indo-European *wreyḱ- (“to bend, twist”), similar to English wry.

Quick answers

What does Brigantēs mean in Latin?
Brigantēs, a proper noun, means “A tribe of Britain, whose queen was Cartimandua”.
What is the genitive of Brigantēs?
The genitive singular is Brigantum. Brigantēs is masculine, third declension.
How do you pronounce Brigantēs?
In classical Latin, [brɪˈɡan.teːs]; in ecclesiastical (church) Latin, [briˈɡan.tes].