Largest continent (4)
I believe the answer is:
asia
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">largest continent</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 asia that I've seen before include "The nations of the East, collectively" , "Continent of the Hindu Kush" , "lands in the east" , "Put out" , "huge region" .)