Fast-food drink size
I believe the answer is:
large
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fast-food drink size</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for large that I've seen before include "Big < burly" , "broad" , "Titanic" , "Immense" , "Comprehensive" .)