He gives a fellow some work (5)
I believe the answer is:
donor
'he gives' is the definition.
(I've seen this before)
'a fellow some work' is the wordplay.
'a fellow' becomes 'don' (both can mean an academic).
'some work' becomes 'or' (I can't explain this - if you can you should give a lot more credence to this answer).
'don'+'or'='DONOR'
Can you help me to learn more?
(Other definitions for donor that I've seen before include "One who dishes out" , "blessed person, relatively" , "One who gives blood, for instance" , "One contributing" , "Subscriber" .)