Refrigerator compartment (6)
I believe the answer is:
icebox
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">refrigerator compartment</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for icebox that I've seen before include "Refrigerator compartment" , "useful in kitchen" , "Chilled container" , "cooler" , "kitchen appliance?" .)