to prevent (the trump-naming opponent at euchre) from taking the required three tricks
Informal to outwit or cheat: they were euchred out of their savings
See euchre in American Heritage Dictionary 4
(yo͞oˈkər)
noun
A card game played usually with the highest 32 cards, in which each player is dealt 5 cards and the player making the trump is required to take at least 3 tricks to win.
The act of euchring an opponent.
transitive verbeu·chred, eu·chring, eu·chres
To prevent (an opponent) from taking 3 tricks in euchre.
To deceive by sly or underhand means; cheat: euchred us out of our life savings.