Asian second Greek character canned (7)
I believe the answer is:
tibetan
'asian' is the definition.
(Tibet is in Asia)
'second greek character canned' is the wordplay.
I cannot really understand how this works, but
'second' could be 'beta' (second Greek letter) and 'beta' is found within the answer.
'character' could be 't' and 't' is found in the answer.
The remaining letters 'in' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for tibetan that I've seen before include "Himalayan language" , "Asian" , "from high land" , "Nationality of citizen of Lhasa, before Chinese invasion" , "mountain man, say" .)