/ ˈtʌni; NAmE / noun ( SAfrE , informal )
1.
an aunt; a friendly form of address for a woman who is older than you
2.
(sometimes disapproving ) a woman, especially one with old-fashioned views or tastes
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WORD ORIGIN
Afrikaans , literally auntie , familiar form of tante ( French , Dutch tante , German Tante aunt ).