on the line
- On a level with the eye of the observer, as of a picture hung in on a wall.
- (idiomatic) At risk, as in a contest or enterprise.
- The survival of the company is on the line with this project.
- "I have a stalker, my life is on the line!" - Gabrielle, from Desperate Housewives Season 3 episode 13
- Currently calling on the telephone.
- I have John on the line for you.
- (sports) On one of the lines marked on a playing field or court and, hence, in bounds.
- The ball was on the line but the umpire ruled it out.