A brave, chivalrous and honorable man devoted to a noble cause or love interest.
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.
A playing card bearing the figure of a knight; the knave or jack.
Any of various nymphalid butterflies of the genus Ypthima (genus).
A generic name for various mushrooms belonging to the order Agaricales, the gilled mushrooms; scientific name Tricholoma.