ace

US /eɪs/
UK /eɪs/
"ace" picture
1.

a playing card with a single spot on it, ranked as the highest card in its suit in most card games

:
He drew an ace of spades.
The ace is the most powerful card in this game.
2.

a person who excels at a particular activity

:
She's an ace at tennis.
He's an ace pilot.
1.

to perform extremely well in an examination or other test

:
She aced her final exams.
He aced the interview and got the job.
1.

excellent

:
That was an ace shot!
We had an ace time at the party.