Quentin —, film director (9)
I believe the answer is:
tarantino
I believe this is a double definition.
'quentin' is the first definition.
(I know that quentin can be written as Tarantino)
'film director' is the second definition.
(I've seen this before)
(Other definitions for tarantino that I've seen before include "Quentin ... film maker" , "Who in tarnation is this US film-maker?" , "Quentin -, American film director" , "Quentin -, US director" , "He makes films" .)