The Romans' victor (4)
I believe the answer is:
hero
'victor' is the definition.
(both can mean a champion)
'the romans'' is the wordplay.
'HERO' is hidden within the letters.
But, I'm unsure how this is indicated.
Can you help me to learn more?
(Other definitions for hero that I've seen before include "Chief good guy in a book or film" , "Book's chief character" , "Leading male role" , "Very brave man" , "Lamp-lighting lover" .)