Asian second grade canned? (7)
I believe the answer is:
tibetan
'asian' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
(Other definitions for tibetan that I've seen before include "Asian" , "Language giving us yak, sherpa and yeti" , "Nationality of citizen of Lhasa, before Chinese invasion" , "from high land" , "mountain man, say" .)