Eg, godparent or backer (7)
I believe the answer is:
sponsor
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">eg godparent</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that godparent is a type of sponsor)</span><br/ ><br/ >'<span class="explanation-format__original">backer</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for sponsor that I've seen before include "Promoter; funder" , "Angel" , "Finance (an event)" , "Back financially" , "One paying for, eg, event" .)