Band of clergy good to make arrest outside? (3,6)
I believe the answer is:
dog collar
'band of clergy' is the definition.
(band worn by members of the clergy)
'good to make arrest outside?' is the wordplay.
'good' becomes 'g' (abbreviation).
'to make' becomes 'do' (do can mean to make or prepare).
'arrest' becomes 'collar' (synonyms).
'outside?' means one lot of letters goes inside another.
'do'+'collar'='docollar'
'g' placed within 'docollar' is 'DOG-COLLAR'.
(Other definitions for dog collar that I've seen before include "What churchmen assume" , "Ecclesiastical" , "Canine neck-band for clergymen" , "How to recognize vicar" , "Vicar's neckwear" .)