zǔ mǔ
father's mother
paternal grandmother
wài zǔ mǔ
mother's mother
maternal grandmother
zēng zǔ mǔ
father's father's mother
paternal great-grandmother
zēng wài zǔ mǔ
great-grandmother (mother's grandmother)
shū zǔ mǔ
wife of paternal grandfather's younger brother
bó shū zǔ mǔ
father's father's brother's wife
great aunt