Pourboire (3)

I believe the answer is:
tip
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pourboire</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 tip that I've seen before include "Piece of useful advice" , "Topple; advice" , "Bonus" , "The rubbish dump" , "expected by those who wait" .)