Philanthropist throwing a coin in the water (4-6)
I believe the answer is:
well-wisher
'philanthropist' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'throwing a coin in the water' is the wordplay.
I cannot quite see how this works, but
'water' could be 'well' (well water is a kind of water) and 'well' is present in the answer.
The remaining letters 'wisher' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for well-wisher that I've seen before include "Person concerned for another's welfare" , "One desiring another's happiness" , "Person sympathetic to a cause" , "Someone hoping for another's happiness" .)