Definition of royal flush
: a straight flush having an ace as the highest card — see poker illustration
First Known Use of royal flush
ROYAL FLUSH Defined for English Language Learners
Definition of royal flush for English Language Learners
: a set of cards that a player has in a card game (such as poker) that are all of the same suit (such as diamonds) and are the most valuable cards (the ace, king, queen, jack, and ten) in that suit
Seen and Heard
What made you want to look up royal flush? Please tell us where you read or heard it (including the quote, if possible).