One leaving medicine out for native (7)
I believe the answer is:
endemic
'native' is the definition.
(I've seen this before)
'one leaving medicine out' is the wordplay.
'one' becomes 'i' (Roman numeral).
'leaving' is a deletion indicator.
'out' indicates an anagram (out can mean wrong or inaccurate).
'medicine' with 'i' taken out is 'medcine'.
'medcine' with letters rearranged gives 'ENDEMIC'.
'for' is the link.
(Other definitions for endemic that I've seen before include "Belonging to a particular area" , "in the vicinity" , "Men dice in way commonly found in country or place" , "Commonly found in a particular country or people" , "(Of a disease) prevalent in a group or area" .)