Dictionary definition · ACE
noun
- proteolytic enzyme that converts angiotensin I into angiotensin II
- 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"
- a major strategic headquarters of NATO; safeguards an area extending from Norway to Turkey
- one of four playing cards in a deck having a single pip on its face
- someone who is dazzlingly skilled in any field
- a serve that the receiver is unable to reach
verb
- succeed at easily"She sailed through her exams"
- score an ace against"He aced his opponents"
- play (a hole) in one stroke
- serve an ace against (someone)
adjective
- of the highest quality"an ace reporter"
Similar words
Source: Open English WordNet (CC BY 4.0).