संस्‍कृतशब्‍दकोशः

अत्ता

माता, सास, बड़ी बहन

mother, mother-in-law, elder sister

Monier–Williams

अत्ता — {attā} f. (probably a colloquialism borrowed from the Deccan, said to occur chiefly in dramas), a mother L##mother's sister L##elder L##(in Prākṛit) a mother-in-law L. {akkā}