Idiom
curtain falls on somethingthe curtain falls (on something)
the end comes to something, esp. a job or activity.Brown managed to get a lot done before the curtain fell on his political career.This year rings down the curtain on more than 50 years of broadcasts.
Usage notes: also used in the phrase the final curtain falls:
His admirers want to honor the singer before the final curtain falls on his career.
Etymology: from the large curtains above the stage in a theater that are brought down at the end of a performance