A number leave one country for another (7)
I believe the answer is:
austria
'a number' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'one country for another' is the wordplay.
I cannot really see how this works, but
'one' could be 'i' (Roman numeral) and 'i' is located in the answer.
'country' could be 'us' (United States) and 'us' is found in the answer.
'another' could be 'r' (I've seen this in other clues) and 'r' is found in the answer.
The remaining letters 'ata' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'leave' is the link.
Can you help me to learn more?
(Other definitions for austria that I've seen before include "Find US tiara in this country" , "The Von Trapps lived there" , "EU member" , "Mountainous European state" , "land in Europe" .)