1 a a member of certain orders of knighthood, and of modern French orders, as the Legion of Honour. b archaic or hist. a knight.
2 hist. the title of the Old and Young Pretenders.
3 a chivalrous man; a cavalier.
Etymology: ME f. AF chevaler, OF chevalier f. med.L caballarius f. L caballus horse
Useful english dictionary. 2012.