grandmother
US
UK grandmother n: (mother of [sb]'s parent)
SC 祖母 zǔ mǔ
TC 祖母
TC 祖母
SC 外祖母 zǔ mǔ，wài zǔ mǔ
SC 外祖母 zǔ mǔ，wài zǔ mǔ
One of my grandmothers is coming to visit.
我一个祖母要来看我。
Grandmother interj: (in direct address)
SC 奶奶 nǎi nɑi
TC 奶奶
TC 奶奶
SC 外婆 nǎi nɑi ，wài pó
SC 姥姥 nǎi nɑi ，lǎo lao
"What big teeth you have, Grandmother," said Little Red Riding Hood.
“外婆，你的牙齿真大呀。”小红帽说。
Don't teach Granny to suck eggs, Don't teach your grandmother to suck eggs interj: figurative (respect [sb]'s experience)
SC 不要班门弄斧，不自量力
great-grandmother n: (mother of a grandparent)
SC 曾祖母 cēng zǔ mǔ
SC 曾外祖母 cēng zǔ mǔ，zēng wài zǔ mǔ
Cars hadn't even been invented when my great grandmother was a young girl.
great-great-grandmother n: (grandmother of a grandparent)
SC 曾曾祖母
SC 曾曾外祖母
stepgrandmother, step-grandmother n: (wife of grandparent)
SC 继祖母
stepgrandmother, step-grandmother n: (mother of parent's spouse)
SC 继祖母