Fee; servant (8)
I believe the answer is:
retainer
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">fee</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that retainer is a type of fee)</span><br/ ><br/ >'<span class="explanation-format__original">servant</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that servant can be written as retainer)</span><br/ ><br/ ></span>
(Other definitions for retainer that I've seen before include "reduced rent" , "Fee paid to book professional services" , "given payment in advance" , "Fee paid to secure services" , "Old servant - fee paid in advance" .)