Politician (7)
I believe the answer is:
senator
'politician' is the definition.
(I know that senator is a type of legislator)
This is the entire clue.
(Other definitions for senator that I've seen before include "Member of Upper House engaged in treason" , "Member of government" , "Member of the Upper House of the US Congress" , "Roman politician" , "One from uni's governing body" .)