In small way, limit care provision (12)
I believe the answer is:
ministration
'care provision' is the definition.
(ministration can mean providing care)
'in small way limit' is the wordplay.
'in small' becomes 'mini' (short for miniature. I am not sure about the 'in' bit.).
'way' becomes 'st' (abbreviation for street).
'limit' becomes 'ration' (rationing is a kind of limiting).
'mini'+'st'+'ration'='MINISTRATION'
(Other definitions for ministration that I've seen before include "Help" , "availability of church services" , "The provision of care" , "giving of aid" , "Helping" .)