HSK 5
外公
wàigōng名
(coll.) mother's father; maternal grandfather
外公每天带我去公园散步。
Wài gōng měi tiān dài wǒ qù gōng yuán sàn bù.
My maternal grandfather takes me walking in the park every day.
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New in the HSK 3.0 word list at level 5.