Part of church in Paisley (5)
I believe the answer is:
aisle
'part of church' is the definition.
(I've seen this before)
'in paisley' is the wordplay.
'in' indicates a hidden word.
'AISLE' is hidden in the letters of 'paisley'.
(Other definitions for aisle that I've seen before include "Walkway between seats" , "part of theatre?" , "Part of a church" , "lateral strip" , "Here comes the bride" .)