Type of stage article put round a professional (5)
I believe the answer is:
apron
'type of stage' is the definition.
(I've seen this in another clue)
'article put round a professional' is the wordplay.
'article' becomes 'an' (indefinite article).
'put round' means one lot of letters goes inside another.
'a professional' becomes 'pro' (abbreviation).
'an' going around 'pro' is 'APRON'.
(Other definitions for apron that I've seen before include "Protective kitchen wear" , "stage perhaps" , "Area around aircraft hangar" , "Space in front of curtain" , "Cook's garment" .)