Dictionary

A young servant or follower; a trained military attendant in service of a lord.

A minor nobleman with an honourable military rank who had served as a page and squire.

(by extension) An armored and mounted warrior of the Middle Ages.

Example: King Arthur and the Knights of the Round Table

(modern) A person on whom a knighthood has been conferred by a monarch.

To confer knighthood upon.

Example: The king knighted the young squire.

To promote (a pawn) to a knight.