- Sir, Arthurian Romance. the noblest and purest knight of the Round Table, son of Lancelot and Elaine: gained the Holy Grail.
- a man showing devotion to the highest ideals.
- Sir Galahad (in Arthurian legend) the most virtuous knight of the Round Table, destined to regain the Holy Grail; son of Lancelot and Elaine
- a pure or noble man