Margarita

google

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from the Spanish given name equivalent to Margaret .

wiktionary

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From Spanish margarita. Doublet of Margaret(and various forms, q.v.), margarite, Margherita, and marguerite.

etymonline

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Margarita (n.)

cocktail made with tequila and citrus fruit juice, 1963, from the fem. proper name, the Spanish form of Margaret. Earlier in English it meant "a Spanish wine" (1920).