Nat rose to become an important man (7)
I believe the answer is:
senator
'an important man' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'nat rose to become' is the wordplay.
'to become' is an anagram indicator.
'nat'+'rose'='natrose'
'natrose' with letters rearranged gives 'SENATOR'.
Can you help me to learn more?
(Other definitions for senator that I've seen before include "One from uni's governing body" , "Member of the Upper House of the US Congress" , "politician going wrong" , "Upper house US Congressman" , "Member of a governing body" .)