Down payment (7)
I believe the answer is:
deposit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">down payment</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for deposit that I've seen before include "Lodge money in bank account" , "Put down - initial payment" , "store" , "Topside (anag) - put down" , "Put down - leave behind" .)