Eat; drink (3)
I believe the answer is:
sup
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">eat</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(supping is a kind of eating)</span><br/ ><br/ >'<span class="explanation-format__original">drink</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(to sup is to drink)</span><br/ ><br/ ></span>
(Other definitions for sup that I've seen before include "Take food" , "Eat a late meal; sip" , "Drink; eat evening meal" , "A mouthful of liquid" , "Imbibe" .)