Shiva calls parvati su shroni,as an affection to her beauty, to mean beautiful buttocks.Ahalya ,buxom with large breasts and wide buttocks satisfied when pondered with lust and orgasm with indhra thanks for his decision ,so he calling her sushroni, to praise the bulkness in her large buttocks. Krishna calls radha as sushroni to praise as butter buttocks having excessive voluptuousness in her stout buttocks which often increased by rasaleela.
su shroni..Sanatani dharma Sanatani dharma