LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

aquilus

aquilus (feminine aquila, neuter aquilum)
Classical[ˈa.kʷɪ.ɫʊs]Ecclesiastical[ˈaː.kʷi.lus]

Meaning

  1. adjectivedark-colored, swarthy

Declension

singular
formmasculinefeminineneuter
nominativeaquilusaquilaaquilum
genitiveaquilīaquilaeaquilī
dativeaquilōaquilaeaquilō
accusativeaquilumaquilamaquilum
ablativeaquilōaquilāaquilō
vocativeaquileaquilaaquilum
plural
formmasculinefeminineneuter
nominativeaquilīaquilaeaquila
genitiveaquilōrumaquilārumaquilōrum
dativeaquilīsaquilīsaquilīs
accusativeaquilōsaquilāsaquila
ablativeaquilīsaquilīsaquilīs
vocativeaquilīaquilaeaquila

ăquĭlus, a, um, adj. etym. uncertain; cf. Paul. ex Fest. p. 22 Müll.,
I. dark-colored, dun, swarthy (very rare): Aquilus color est fuscus et subniger, Paul. ex Fest. l. l.: Staturā haud magnā, corpore aquilo, Plaut. Poen. 5, 2, 152: color inter aquilum candidumque, * Suet. Aug. 79; Arn. 3, p. 108.

Origins

Uncertain. Traditionally derived by the Romans from aqua (“water”), which is supported by Pokorny, who also adduces Aquilō (“the North wind”) as related. Though the above theory is rejected by Ernout and Meillet, De Vaan finds it preferable to an alternative derivation from aquila (“eagle”) suggested by Cohen 2004: 32.

Quick answers

What does aquilus mean in Latin?
aquilus, a adjective, means “dark-colored, swarthy”.
How do you pronounce aquilus?
In classical Latin, [ˈa.kʷɪ.ɫʊs]; in ecclesiastical (church) Latin, [ˈaː.kʷi.lus].