noun. The number four; the four in dice; the four-spot in cards or dominoes.

noun. A card, die. or domino, having four spots, or pips.

noun. A card, die, or domino with four spots or pips.

"QuadrilleI am struck by the preponderance of Latin roots for many English q-words that emanate from quad (4), or at least to the concept of dividing into four parts: quatrefoil (in French, quatre–4– and feuille, leaf), quadrille (a card game or square dance...or graph paper), quadrilateral . . ."