Definition of Excalibur
: the sword of King Arthur
Origin of excalibur
Middle English Excalaber, from Anglo-French Escalibor, from Medieval Latin Caliburnus
First Known Use: 15th century
Learn More about excalibur
Britannica.com: Encyclopedia article about "Excalibur"
Seen and Heard
What made you want to look up Excalibur? Please tell us where you read or heard it (including the quote, if possible).