Non-clerical individual getting into resin (4)
I believe the answer is:
laic
'non-clerical' is the definition.
(I've seen this before)
'individual getting into resin' is the wordplay.
'individual' becomes 'i'.
'getting into' indicates putting letters inside.
'resin' becomes 'lac' (I've seen this before).
'i' placed inside 'lac' is 'LAIC'.
(Other definitions for laic that I've seen before include "outside the church" , "Of those not members of the clergy" , "Unlike minister" , "unlike ministers" , "people not in church" .)