Jazz fan getting last of Coltrane? Bloody class! (8)
I believe the answer is:
category
'class' is the definition.
(I know that class can be written as category)
'jazz fan getting last of coltrane? bloody' is the wordplay.
'jazz fan' becomes 'cat' (slang term for a jazz fan).
'getting' means one lot of letters go next to another.
'last of' suggests the final letters.
'bloody' becomes 'gory' (similar in meaning).
The last letter of 'coltrane' is 'e'.
'cat'+'e'+'gory'='CATEGORY'
(Other definitions for category that I've seen before include "Class of grey-coat" , "Genre" , "Class or order" , "Coy Greta found among this class of things" , "Grey coat (anag.)" .)