World traveller (12)
I believe the answer is:
globetrotter
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">world traveller</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 globetrotter that I've seen before include "Widely travelled tourist" , "seasoned traveller" , "Traveller the world over" , "One travelling widely" , "Wide-ranging traveller" .)