| Noun | 1. | ace - 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"; "they had lunch at one"digit, figure - one of the elements that collectively form a system of numbers; "0 and 1 are digits" monas, monad - a singular metaphysical entity from which material properties are said to derive singleton - a single object (as distinguished from a pair) | |
| 2. | ace - one of four playing cards in a deck having a single pip on its faceace of spades - the ace of spades; sometimes taken as a portent of death playing card - one of a pack of cards used in playing card games | |
| 3. | ace - someone who is dazzlingly skilled in any fieldhotshot, maven, mavin, superstar, virtuoso, whiz, whizz, wiz, wizard, adept, sensation, star, genius, champion expert - a person with special knowledge or ability who performs skillfully | |
| 4. | ACE - a major strategic headquarters of NATO; safeguards an are extending from Norway to Turkeyheadquarters - (plural) a military unit consisting of a commander and the headquarters staff | |
| 5. | ace - a serve that the receiver is unable to reachserve, service - (sports) a stroke that puts the ball in play; "his powerful serves won the game" | |
| Verb | 1. | ace - succeed at easily; "She sailed through her exams"; "You will pass with flying colors"; "She nailed her astrophysics course"make it, pass - go successfully through a test or a selection process; "She passed the new Jersey Bar Exam and can practice law now" | |
| 2. | ace - score an ace against; "He aced his opponents"rack up, score, tally, hit - gain points in a game; "The home team scored many times"; "He hit a home run"; "He hit .300 in the past season" | |
| 3. | ace - play (a hole) in one strokegolf, golf game - a game played on a large open course with 9 or 18 holes; the object is use as few strokes as possible in playing all the holes play - participate in games or sport; "We played hockey all afternoon"; "play cards"; "Pele played for the Brazilian teams in many important matches" | |
| 4. | ace - serve an ace against (someone)lawn tennis, tennis - a game played with rackets by two or four players who hit a ball back and forth over a net that divides the court serve - put the ball into play; "It was Agassi's turn to serve" | |
| Adj. | 1. | ace - of the highest quality; "an ace reporter"; "a crack shot"; "a first-rate golfer"; "a super party"; "played top-notch tennis"; "an athlete in tiptop condition"; "she is absolutely tops"colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech superior - of high or superior quality or performance; "superior wisdom derived from experience"; "superior math students" | |