1660s, "chief lady in waiting upon the queen of Spain," also "an elderly woman in charge of girls from a Spanish family," from Spanish dueña "married lady, mistress" (fem. of dueño "master"), from Latin domina "lady, mistress of the house," from Latin domus "house" (from PIE root *dem- "house, household"). Sense extended in English to "any elderly woman chaperon of a younger woman" (1708).
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