n. A boy; a youth; a young man.n. An attendant or servant; especially, a military attendant; a man-at-arms; a soldier.n. Specifically In Europe during the middle ages, a person of noble birth trained to arms and chivalry, first as page and afterward as squire to the sovereign, or to some earl, baron, or other superior lord, to whom he attached himself, and whom he was bound to follow to war on horseback.n. In Great Britain in modern times, a man upon whom a certain honorary dignity has been conferred by a sovereign as a reward of personal merit of some kind, without reference to birth or possessions, and in no way involving military service, which disappeared as a feature of knighthood with the other institutions of chivalry.n. A champion; a warrior; especially, a champion devoted to the service of another; a defender.n. One of the pieces in the game of chess, having usually the figure of a horse's head.n. In card-playing, the knave or jack. Abbreviated knt., or in combination K. (as K. G., Knight of the Garter; K. C. B., Knight Commander of the Bath).n. A branch of the fraternity of Freemasons in the United states, with an organization based upon that of the medieval order of the same name.To dub or create a knight; confer the honor of knighthood upon. The ceremony is regularly performed by touching the person on whom the dignity is conferred with a sword as he kneels. See accolade, 1.