- Excalibur is defined as was the name of King Arthur's sword.
An example of Excalibur is the sword that, according to legend, King Arthur pulled from a stone.
Excalibur, the sword of King Arthur.
Origin of ExcaliburMiddle English ; from Old French Escalibor ; from Medieval Latin Caliburnus ; from Celtic
Origin of ExcaliburMiddle English, alteration (perhaps influenced by Latin chalybs, steel) of Medieval Latin Caliburnus, from Middle Welsh Caletuwlch or Middle Irish Caladbolg, a legendary sword.
- A legendary sword of King Arthur, attributed with magical properties.
Middle English Excalaber, from Old French Escalibor, Escaliborc, prothetic form of Calliborc, alteration of Calibourne, from Medieval Latin Caliburnus (Geoffrey of Monmouth, ca. 1136), influenced by calibs ‘steel’ (for chalybs), alteration of Old Welsh *Caledbulch (cf. modern Caledfwlch), compound of caled ‘hard’ and bwlch ‘cleft, crack’. Related to the Irish legendary sword Caladbolg, literally ‘hard-belly’, i.e. ‘voracious’.