Drink to excess (4)
I believe the answer is:
tope
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">drink to excess</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 tope that I've seen before include "Drink a lot like poet" , "plantation?" , "What habitual drinkers do" , "Drink heavily" , "Small grey requiem shark" .)