Traveller using tracks across Arab country (6)
I believe the answer is:
romany
'traveller' is the definition.
(Romany is an example)
'tracks across arab country' is the wordplay.
'tracks' becomes 'ry'.
'across' means one lot of letters goes inside another.
'arab country' becomes 'oman' (I've seen this before).
'ry' enclosing 'oman' is 'ROMANY'.
'using' is the link.
(Other definitions for romany that I've seen before include "Traveller" , "Gypsy language" , "Language of gypsies" , "Roy, man, you're a gypsy" , "one of those travelling" .)