Two-faced god (5)
I believe the answer is:
janus
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">two-faced god</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for janus that I've seen before include "Roman god of doors and beginnings" , "Roman god of doors, usually two-faced - a month is named for him" , "Two-faced Roman god of doors (5)" , "Two-faced person" , "Two-faced deity" .)