In church, vice out of bounds (4)
I believe the answer is:
chic
'in' is the definition.
(in can mean chic or fashionable)
'church vice out of bounds' is the wordplay.
'church' becomes 'ch' (abbreviation on maps etc).
'out of bounds' says to take the centre (the bounds or edges of the word are removed).
The middle letters of 'vice' are 'ic'.
'ch'+'ic'='CHIC'
(Other definitions for chic that I've seen before include "Stylishly turned out" , "In vogue" , "Unwanted sounds" , "Smart - elegant - fashionable" , "French elegance" .)