Colosseum warrior (9)
I believe the answer is:
gladiator
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colosseum warrior</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for gladiator that I've seen before include "Spartacus, for example" , "one entering the ring" , "One trained to fight in Roman arenas" , "Roman arena combatant" , "Warrior" .)