Caliburnus

== Latin == === Etymology === Latinization of Old Welsh Caledfwlch, perhaps influenced by calibs, a medieval spelling variant of chalybs (“iron, steel”). First attested in, and likely coined by, Geoffrey of Monmouth (c. 1136). === Pronunciation === (Classical Latin) IPA(key): [ka.lɪˈbʊr.nʊs] (modern Italianate Ecclesiastical) IPA(key): [ka.liˈbur.nus] === Proper noun === Caliburnus m sg (genitive Caliburnī); second declension (Medieval Latin, Arthurian legend) Excalibur (the legendary sword of King Arthur, having magical properties). ==== Declension ==== Second-declension noun, singular only.