Plastic upper-class snubbed by Azeri nobility? (8)
I believe the answer is:
bakelite
'plastic' is the definition.
(Bakelite is an example)
'snubbed by azeri nobility?' is the wordplay.
'snubbed' means to remove the last letter (could historically mean cutting the end off).
'azeri' becomes 'ak' (I can't explain this - if you can you should give a lot more credence to this answer).
'nobility?' becomes 'elite' (nobility is a kind of elite).
'by' with its last letter taken away is 'b'.
'b'+'ak'+'elite'='BAKELITE'
'upper-class' acts as a link.
This may not be right. It may be part of another bit of the clue.
(Other definitions for bakelite that I've seen before include "'Type of hard plastic, used in old telephones (8)'" , "Early form of plastic used for tableware, telephones etc" , "Type of hard plastic, in old telephones say" .)