A Royal Flush is the highest-ranking poker hand: A‑K‑Q‑J‑10 of the same suit.
Explanation. It stands at the top of poker hand rankings. The term “royal” evokes the highest cards in the deck (Ace through Ten). It is the rarest hand and unbeatable in standard play. When you hold a royal flush, you should bet for maximum value—it virtually always wins if shown at showdown.