It comes from stud poker , where players receive one card face-down (the "hole card") and the rest face-up. Having an ace as your hidden card provides a powerful, unseen advantage.
The phrase describes a hidden resource or advantage kept in reserve until it can be used to ensure success. Ace in the Hole
" Ace in the Hole " is a multi-layered term most commonly recognized as a for a secret advantage and a 1951 film noir masterpiece directed by Billy Wilder. 1. Idiom Meaning and Origin It comes from stud poker , where players