Type of washing machine (4-3)
I believe the answer is:
twin-tub
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">type of washing machine</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for twin-tub that I've seen before include "Washing machine with two revolving drums" , "Dual washing-machine" , "Type of washing machine" .)