Wrestling a Roman over leadership of Senate, he pulls a blade (7)
I believe the answer is:
oarsman
'he pulls a blade' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'wrestling a roman over leadership of senate' is the wordplay.
'wrestling' indicates anagramming the letters.
'over' is an insertion indicator.
'leadership of' indicates taking the first letters (the letters which lead the words).
The first letter of 'senate' is 's'.
'a'+'roman'='aroman'
'aroman' anagrammed gives 'oarman'.
'oarman' enclosing 's' is 'OARSMAN'.
Can you help me to learn more?
(Other definitions for oarsman that I've seen before include "He rows" , "A ransom (anag)" , "Member of rowing crew" , "It's bordered by Libya and France" , "One in an eight?" .)