·noun Hence: A very small quantity or degree; a particle; an atom; a jot.
II. Ace ·noun A unit; a single point or spot on a card or die; the card or die so marked; as, the ace of diamonds.
III. Ace ·add. ·noun A single point won by a stroke, as in handball, rackets, ·etc.; in tennis, frequently, a point won by a service stroke.