0 a playing card that has only one symbol on it -- es
the ace of spades.
1 a person who is expert at anything -- ener; geni
He’s an ace with a rifle.
2 a serve in tennis in which the ball is not touched by the opposing player -- servees, es
3 the “one” on dominoes or dice. -- etter
4 very good -- vinder
The concert was ace.