What is English ACE

Definitions of ACE

1. A single point or spot on a playing card or die.
2. A card or die face so marked.
3. The ball marked with the number 1 in pool and related games.
4. A very small quantity or degree; a particle; an atom; a jot.
5. A serve won without the opponent hitting the ball.
6. A single point won by a stroke, as in handball, rackets, etc.
7. The best pitcher on the team.
8. A run.
9. A hole in one.
10. An expert at something.
11. A military aircraft pilot who is credited with shooting down many enemy aircraft, typically five or more.
12. A perfect score on a school exam.
13. Any of various hesperiid butterflies.
14. A quark.
15. To pass (a test, interviews etc.) perfectly.
16. To win a point by an ace.
17. To make an ace (hole in one).
18. Excellent.
19. Asexual.
20. A person who is asexual.
21. A member of
22. A dollar bill.
23. .
24. A common nickname suggesting skill, particularly among airplane pilots.
25. a NASA spacecraft.