Tribesman gave the doctor something to eat (7)
I believe the answer is:
moabite
'tribesman gave' is the definition.
I don't know anything about this answer so I cannot tell whether this works.
'doctor something to eat' is the wordplay.
'doctor' becomes 'moa' (I can't justify this - if you can you should give a lot more credence to this answer).
'something to eat' becomes 'bite' (a bite to eat).
'moa'+'bite'='MOABITE'
'the' acts as a link.
Can you help me to learn more?
(Other definitions for moabite that I've seen before include "Old Jordanian" , "of ancient kingdom" , "old man of Jordan" , "person such as Ruth" .)