Package Norm left outside church (6)
I believe the answer is:
parcel
'package' is the definition.
(I know that package can be written as parcel)
'norm left outside church' is the wordplay.
'norm' becomes 'par' (I've seen this before).
'left' becomes 'l' (common abbreviation).
'outside' means one lot of letters goes inside another (some letters go outside others).
'church' becomes 'CE' (abbreviation for Church of England).
'par'+'l'='parl'
'parl' going around 'ce' is 'PARCEL'.
(Other definitions for parcel that I've seen before include "One wrapped" , "Wrapped present" , "Wrapped item in post" , "Consignment of wrapped items" , "Soft shade; crayon" .)