Bookworm regarding a German article (6)
I believe the answer is:
reader
'bookworm' is the definition.
(I've seen this in another clue)
'regarding a german article' is the wordplay.
'regarding' becomes 're' ('re' means regarding or about).
'german article' becomes 'der' (definite article in German).
're'+'a'+'der'='READER'
(Other definitions for reader that I've seen before include "Person perusing a book or newspaper" , "Peruser of texts" , "Lecturer; book user" , "University lecturer, the highest rank below a professor" , "He's immersed in a book or newspaper" .)