adjective
Definition: Something that is of the highest quality or standard, often used to describe excellent performance or skill.
Example: She is an ace student, always achieving the highest grades.
noun
Definition: A person who is very skilled at something, especially in sports or games, or a playing card that has one spot.
Example: He played an ace to win the game.
transitive verb
Definition: To do something very well or to achieve a high score, especially in a test or competition.
Example: She aced the exam and received a scholarship for her outstanding performance.