grandad
/ˈgrændæd/(亦作granddad)
noun
1
- informal one's grandfather〈非正式〉爷爷; 外公。
1.1
- a form of address to an elderly man老人家（对老年人的称呼）：
cheer up, grandad, it may never happen.
振作起来, 老人家, 这种事可能永远不会发生。
2
- as modifier denoting a style of shirt or shirt neckline with a collar in the form of a narrow upright band fastened with buttons（窄领竖起并有纽扣扣紧的）衬衫; 衬衫领口。