Huge virile-sounding Turk (7)
I believe the answer is:
osmanli
'turk' is the definition.
(historically a person from the Ottoman Empire)
'huge virile-sounding' is the wordplay.
I cannot quite understand how this works, but
'huge' could be 'os' (abbreviation for outsize) and 'os' is present in the answer.
This explanation may well be incorrect...
(Other definitions for osmanli that I've seen before include "Old Turkish" , "Turk" .)