Masonic wear an expert brought in (5)
I believe the answer is:
apron
'masonic wear' is the definition.
'apron' can be an answer for 'wear' (apron is a kind of wear). I am not sure about the 'masonic' bit.
'an expert brought in' is the wordplay.
'expert' becomes 'pro' (short for professional).
'brought in' indicates putting letters inside.
'an' enclosing 'pro' is 'APRON'.
Can you help me to learn more?
(Other definitions for apron that I've seen before include "skirt" , "Protective garment - type of stage" , "Airport area for manoeuvring and loading planes" , "Kitchen garment or airfield surface." , "Projecting stage" .)