Globetrotter's need (4)
I believe the answer is:
visa
'globetrotter's need' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for visa that I've seen before include "Travel stamp in passport" , "Passport stamp or well-known credit card" , "Stamp affixed to passport as permission to enter country" , "Endorsement made in a passport" , "Addition to passport" .)