Beginning or origin (7)
I believe the answer is:
genesis
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">beginning</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(genesis is a kind of beginning)</span><br/ ><br/ >'<span class="explanation-format__original">origin</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for genesis that I've seen before include "Creation" , "Origin (of the Old Testament?)" , "name of group" , "First book of the Old Testament" , "rock group" .)