Money chest (6)
I believe the answer is:
coffer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">money chest</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for coffer that I've seen before include "Chest for storing valuables" , "Money chest sounds like one with lung trouble" , "Strong box at the treasury" , "safe" , "jewellery store?" .)