Cough syrup (7)
I believe the answer is:
linctus
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cough syrup</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 linctus that I've seen before include "Syrup that may see a cough off" , "Cough medicine" , "Special formulation" , "Thick cough mixture" , "Cough-medicine" .)