For doctors with a place in the China Sea (7)
I believe the answer is:
formosa
'place in the china sea' is the definition.
The answer and definition can be both locations as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'for doctors with a' is the wordplay.
'doctors' becomes 'mos' (an MO is a Medical Officer).
'with' means one lot of letters go next to another.
'for'+'mos'+'a'='FORMOSA'
Can you help me to learn more?
(Other definitions for formosa that I've seen before include "Taiwan, formerly" , "Old name of island" , "Former name of Taiwan" , "Old name for Taiwan" .)