n.[C]

1. 祖父；外祖父
   My grandfather arrived in New York after the Civil War.

   我祖父在南北战争之后来到纽约。

2. 老祖宗
   The church supper is the grandfather of the country club.

   教堂的晚餐聚会是乡间俱乐部的前身。

3. 老先生，老大爷；老年人
4. 老爷钟（落地式大时钟）
5. 【美】【俚】高年级学生

vt.

1. 不受新条例，新规定限制
   The city passed an ordinance restricting the size of advertising signs, but grandfathered all those signs erected before 1992.

   该城市通过了限制广告招牌大小的条例，但是一九九二年以前竖立的招牌不在此限。

n.

1. the father of one's father or mother.
2. a founder or originator.

v.