Question a sailor's country (5)
I believe the answer is:
qatar
'country' is the definition.
(Qatar is an example)
'question a sailor's' is the wordplay.
'question' becomes 'q'.
'sailor' becomes 'tar' (tar can mean a sailor).
'q'+'a'+'tar'='QATAR'
(Other definitions for qatar that I've seen before include "Sheikdom on the Persian Gulf" , "Gulf emirate" , "State in the Persian Gulf" , "Doha's sheikhdom" , "Gulf sheikhdom" .)