Window cleaner (8)
I believe the answer is:
squeegee
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">window cleaner</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 squeegee that I've seen before include "Rubber-edged gizmo for cleaning windows" , "Window cleaner's rubber-edged tool" , "Window wiper" , "Instrument for removing water and dirt from windows and floors" , "Window wipe" .)