What is ace meaning slang?

Ace as slang means excellent, exceptionally skilled, or proficient. It can also mean to succeed at something, or that someone or something is cool or awesome. It is often used as an adjective to describe a person or thing that is highly capable or impressive. The term originated from the expression "ace card," which is the highest value playing card in many card games. Over time, it has evolved to have a broader meaning that extends beyond card games.