411 /ˌfɔː wʌn ˈwʌn $ ˌfɔːr-/ 1. the telephone number you use in the US and Canada to call directory assistance (=a service which helps you to find someone’s number) 411〔美国和加拿大的电话查询号码〕
2 the 411 on something American EnglishAmE information about something 某事物的信息5Let me give you the 411 on the new girl.我来给你讲讲那个新来的女孩的情况。
the 411 on text messaging 短信上的信息