Ace in the ___, term originating through card games that means an effective or decisive argument held in reserve Crossword Clue

Some levels in Crossword Explorer are difficult, so we decided to make this guide, which can help you with “Ace in the ___, term originating through card games that means an effective or decisive argument held in reserve” crossword clue answers if you can’t pass it by yourself. 

Ace in the ___, term originating through card games that means an effective or decisive argument held in reserve Crossword Clue Answers

• HOLE