One blend could be exalted (8)
I believe the answer is:
ennobled
'exalted' is the definition.
(I've seen this in another clue)
'one blend could be' is the wordplay.
'could be' indicates an anagram.
'one'+'blend'='oneblend'
'oneblend' anagrammed gives 'ENNOBLED'.
(Other definitions for ennobled that I've seen before include "Given a title" , "Dignified" , "Elevated to the peerage" , "Given peerage" , "Got up to peer" .)