Meaning of wài gōng:
wài gōng
外公
Noun
(coll.) mother's father; maternal grandfather
Wǒ de wàigōng zhù zài xiāngxià.
我的外公住在乡下。
My grandfather lives in the countryside.
Wǒ de wàigōng xǐhuan xià xiàngqí.
我的外公喜欢下象棋。
My maternal grandfather likes to play Chinese chess.