ace
Esa maniobra convirtió al cerdo en el as del Adriático.
That maneuver turned the pig into the ace of the Adriatic.
— Porco Rosso (1992)
Ese testigo sorpresa fue el as bajo la manga de la defensa.
That surprise witness was the defense’s ace up its sleeve.
El as de picas falta en esta baraja de cartas.
The ace of spades is missing from this deck of cards.
I have the ace of diamonds.