Ragamuffin church invited inside (6)
I believe the answer is:
urchin
'ragamuffin' is the definition.
(I've seen this before)
'church invited inside' is the wordplay.
'inside' indicates a hidden word.
'URCHIN' is hidden within 'church invited'.
(Other definitions for urchin that I've seen before include "Annoying little boy" , "Grubby boy or sea plant" , "Marine hedgehog" , "Gamin" , "Ragged boy" .)