grandad
noun [ C ] informal (also granddad) uk/ˈɡræn.dæd/ us/ˈɡræn.dæd/
A2 （外）祖父
a grandfather
My grandad was a coal miner. 我祖父是一名煤炭工人。
[ as form of address ] Do you want a cup of tea, Grandad? 爷爷，你想喝杯茶吗?
（对老年人粗鲁或幽默的称呼）老爷子，老头儿
used rudely or humorously to address an old man
Come on, grandad! 快点儿，老爷子！