Definitions
1.nounA single point or spot on a playing card or die.
2.nounA card or die face so marked."I have the ace of diamonds."
3.nounThe ball marked with the number 1 in pool and related games.
4.nounA very small quantity or degree; a particle; an atom; a jot.
5.nounA serve won without the opponent hitting the ball.
6.nounA single point won by a stroke, as in handball, rackets, etc.
7.nounThe best pitcher on the team.
8.noun(19th century) A run.
9.nounA hole in one.
10.nounAn expert at something.
11.nounA military aircraft pilot who is credited with shooting down many enemy aircraft, typically five or more.
12.nounA perfect score on a school exam.
13.nounAny of various hesperiid butterflies.
14.nounA quark.
15.verb(US) To pass (a test, interviews etc.) perfectly.
16.verbTo win a point by an ace.
17.verbTo make an ace (hole in one).
18.adjectiveExcellent.