English definition of “long”
› for a long time: We didn't have to wait long for the train. The band played long into the night.
as long as › used when you are talking about something that must happen before something else can happen: You can play football as long as you do your homework first.
before long › soon: He'll be home before long.
long ago › If something happened long ago, it happened a great amount of time ago.
no longer/not any longer › not now: He no longer works here.