Submarine sandwich
I believe the answer is:
hero
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">submarine sandwich</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for hero that I've seen before include "Male protagonist" , "victor" , "Valiant man" , "girl a ring" , "Chief male character in story or film - probably very brave" .)