Latin

Noun

arx f ‎(genitive arcis); third declension

1. citadel, stronghold, fortress
   • Vergil, Aeneid, 2.56:

     ... Troiaque, nunc stares, Priamique arx alta, maneres.

     ... and Troy, you would now be standing, and Priam's mighty citadel still endure.

2. height, summit, hilltop; the Capitoline hill
3. defense, refuge
4. (figuratively) bulwark

Inflection

Third declension i-stem.

References

• arx in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• arx in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• ARX in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• Félix Gaffiot (1934), “arx”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.
• arx in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• arx in Samuel Ball Platner (1929), Thomas Ashby, editor, A Topographical Dictionary of Ancient Rome, London: Oxford University Press
• arx in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin