Fabric salesman introduced to church (5)
I believe the answer is:
crepe
'fabric' is the definition.
(crepe is a kind of fabric)
'salesman introduced to church' is the wordplay.
'salesman' becomes 'rep' (I've seen this before).
'introduced to' indicates putting letters inside.
'church' becomes 'ce' (abbreviation for Church of England).
'rep' put into 'ce' is 'CREPE'.
(Other definitions for crepe that I've seen before include "Crinkly paper" , "Crinkly fabric and French pancake" , "Crinkly material" , "Soft thin fabric with a crinkled surface" , "Pancake - type of paper" .)