Idol among the Romans (4)
I believe the answer is:
hero
'idol' is the definition.
(I've seen this before)
'among the romans' is the wordplay.
'among' indicates the answer is hidden within the clue.
'HERO' can be found hidden inside 'the romans'.
(Other definitions for hero that I've seen before include "Lamp-lighting lover" , "priestess of Aphrodite" , "Principal male figure in a story" , "Person lauded for bravery" , "One looked up" .)