Meaning

noun your grandmother

noun the mother of your father or mother

noun leavened bread baked in a clay oven in India; usually shaped like a teardrop

originFrom Nan, pet form of the formerly very common female given names Anne and Agnes. As a nursemaid and grandmother, a clipping of earlier nana, from nanny under the probable influence of mama, also from Nan. Compare Mary.

Etymology from Wiktionary, CC BY-SA 3.0