To get somewhere in Arabia, a sailor's at the head of the queue (5)
I believe the answer is:
qatar
'to get somewhere in arabia' is the definition.
I can't judge whether this definition defines the answer.
'a sailor's at the head of the queue' is the wordplay.
'sailor' becomes 'tar' (tar can mean a sailor).
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the head of' indicates taking the first letters.
The first letter of 'queue' is 'q'.
'a'+'tar'='atar'
'atar' put after 'q' is 'QATAR'.
Can you help me to learn more?
(Other definitions for qatar that I've seen before include "Tiny gulf state" , "Arab peninsula" , "Doha's state" , "Arab country" , "former British protectorate" .)