1.the smallest whole number or a numeral representing this number;
he has the one but will need a two and three to go with it
2.one of four playing cards in a deck having a single pip on its face
3.someone who is dazzlingly skilled in any field
4.a serve that the receiver is unable to reach
5.of the highest quality;
an ace reporter
1.succeed at easily;
She sailed through her exams
2.score an ace against;
He aced his opponents
3.play (a hole) in one stroke
4.serve an ace against (someone)