knight
Originally, a knight was a youth, and young men being employed as servants, hence it came to signify a servant. But among our warlike ancestors, the word was particularly applied to a young man after he was admitted to the privilege of bearing arms. The admission to this privilege was a ceremony of great importance, and was the origin of the institution of knighthood. Hence, in feudal times, a knight was a man admitted to military rank by a certain ceremony. This privilege was conferred on youths of family and fortune, and hence sprung the honorable title of knight, in modern usage. A knight has the title of Sir.