Protective part of stage? (5)
I believe the answer is:
'part of stage?' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for apron that I've seen before include "Domestic protection" , "Kitchen garment or part of airfield" , "Part of stage in front of the curtain" , "Extension of stage in front of curtain" , "that's used by Oliver!?" .)