World record? (5)
I believe the answer is:
atlas
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">world record?</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 atlas that I've seen before include "African mountain range" , "Titan who supported the heavens" , "Large-format book" , "Segment of spine" , "collected world records?" .)