a mounted soldier serving under a feudal superior in the Middle Ages.

(in Europe in the Middle Ages) a man, usually of noble birth, who after an apprenticeship as page and squire was raised to honorable military rank and bound to chivalrous conduct.

any person of a rank similar to that of the medieval knight.

a man upon whom the nonhereditary dignity of knighthood is conferred by a sovereign because of personal merit or for services rendered to the country. In Great Britain he holds the rank next below that of a baronet, and the title Sir is prefixed to the Christian name, as in Sir John Smith.

a member of any order or association that designates its members as knights.

Chess . a piece shaped like a horse's head, moved one square vertically and then two squares horizontally or one square horizontally and two squares vertically.

Nautical .

a short vertical timber having on its head a sheave through which running rigging is rove.

any other fitting or erection bearing such a sheave.

to dub or make (a man) a knight.

adjective

chivalric , chivalrous , equestrian

noun

banneret , caballero , cavalier , champion , chevalier , companion , gallant , gentleman , horseman , knight errant , lover , man-at-arms , paladin , partisan , protagonist , templar