“Maverick” is slang for a natural Ace or broadway straight flop.
Explanation. Derived from Jack Maverick radio show—referring to uppercase Ace-high boards like A‑K‑Q‑J‑10—a “Maverick” flop hits straights for broadway hands. It’s used in mixed-game or hold’em chat when such flops arrive. Slang adds drama to recounting action.nn