Eucharist (n.)

type of card game played with a partial deck, enormously popular in U.S. before the rise of bridge, by 1840, American English, especially in publications from the (then) Southwest and sometimes associated with the Dutch (Germans). In early use also uker, yucker. Encyclopedia Britannica declares it to derive from juckerspiel, an Alsatian game. The modern spelling is perhaps on the model of Eucharist.

By 1829 it also was an English spelling for yucca.

word-forming element, in modern use meaning "good, well," from Greek eus "good," eu "well" (adv.), also "luckily, happily" (opposed to kakos), as a noun, "the right, the good cause," from PIE *(e)su- "good" (source also of Sanskrit su- "good," Avestan hu- "good"), originally a suffixed form of root *es- "to be." In compounds the Greek word had more a sense of "greatness, abundance, prosperity," and was opposed to dys-.