Charity starts to advance international development (3)
I believe the answer is:
aid
'charity' is the definition.
(I've seen this before)
'starts to advance international development' is the wordplay.
'starts to' says to take the initial letters.
The initial letters of 'advance international development' is 'AID'.
(Other definitions for aid that I've seen before include "technique that can produce pregnancy" , "welfare" , "grant" , "Care and help" , "charity" .)