Pop-up appliance (7)
I believe the answer is:
toaster
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pop-up appliance</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for toaster that I've seen before include "Machine for making brown bread?" , "Best man" , "Person with role at wedding reception" , "Device using sliced bead" , "Kitchen gadget" .)