ring the curtain up

1. Fig. to raise the curtain in a theater. (Alludes to sending the signal to raise the curtain.) The stagehand rang the curtain up precisely on time. Let's ring up the curtain. It's time to start the show.

2. Fig. to start a series of activities or events. I am set to ring up the curtain on a new lifestyle. It's a little late to ring up the curtain for anew career.