น้า(náa)

younger sibling of one’s mother

the mother’s younger sibling, male or female; used to refer to or address one's maternal aunt or uncle

polite address to an adult woman

a polite term to address an adult woman slightly older than the speaker, often used like a kin term in informal contexts

aunt/uncle by marriage (maternal)

the spouse of one’s mother’s younger sibling, such as the husband of a maternal aunt or the wife of a maternal uncle

stepmother (colloquial, regional)

a colloquial term in some regions for one’s father’s new wife; used informally