grandaddy
🇺🇸
/ˈɡrændædi/
🇬🇧
/ˈɡrændædi/
Your father's father, or your mother's father.
My grandaddy taught me how to fish when I was a kid.
我爺爺在我小時候教我如何釣魚。
The most important or earliest example of something.
The grandaddy of all smartphones is the iPhone.
所有智慧型手機中的鼻祖是iPhone。