Definition of knight
- knight Noun A warrior, especially of the Middle Ages.
- knight Noun Nowadays, a person on whom a knighthood has been conferred by a monarch.
- knight Noun A chess piece, often in the shape of a horse's head, that is moved two squares in one direction and one at right angles to that direction in a single move, leaping over any intervening pieces.
- knight Verb To confer knighthood upon.
- knight Verb To promote (a pawn) to a knight.