Month of a Roman emperor (6)
I believe the answer is:
august
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">month of a roman emperor</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for august that I've seen before include "which is supposedly hot" , "Month named after emperor of Rome" , "Dignified - time of year" , "Roman emperor's month" , "For Edna O'Brien, it was a 27 across month" .)