Some European is turned on wearing pants (9)
I believe the answer is:
norwegian
'some european' is the definition.
(Norwegian is an example)
'turned on wearing pants' is the wordplay.
'turned' says the letters should be written backwards.
'pants' indicates anagramming the letters (UK informal term for 'nonsense' or 'rubbish').
'on' back-to-front is 'no'.
'wearing' anagrammed gives 'rwegian'.
'no'+'rwegian'='NORWEGIAN'
'is' acts as a link.
(Other definitions for norwegian that I've seen before include "Grieg perhaps" , "1 in 21 [OSLO] possibly" , "One may live overseas" , "Oddly, regain now the nationality" , "Northerner" .)