Well-travelled person (12)
I believe the answer is:
globetrotter
'well-travelled person' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for globetrotter that I've seen before include "One who travels widely" , "Traveller the world over" , "Well-travelled person" , "One travelling widely" , "Habitual worldwide traveller" .)