(They) leave the stage (6)
I believe the answer is:
exeunt
'they leave the stage' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for exeunt that I've seen before include "direction to get cast away" , "Trivial details" , "More than one exit?" , "Stage direction to a group of actors (Latin)" , "(Actors) leave stage" .)