ad

1. N-COUNT An ad is an advertisement. 广告[非正式]

She replied to a lonely hearts ad she spotted in the New York Times. 她回复了在《纽约时报》上看到的一则求友广告。

2. N-COUNT advantage的缩写 (Brit equivalent van)[美国英语] →short for advantage

3. the INTERNET DOMAIN NAME for Andorra 安道尔公国