Beginner left part of Austria (5)
I believe the answer is:
tyrol
'part of austria' is the definition.
('Tyrol' is part of 'austria')
'beginner left' is the wordplay.
'beginner' becomes 'tyro' ('tyro' can be a synonym of 'beginner'**).
'left' becomes 'l' (common abbreviation).
'tyro'+'l'='TYROL'
(Other definitions for tyrol that I've seen before include "mountain state" , "Austrian Alpine state (English spelling)" , "Mountainous state of western Austria" , "Alpine region of Austria and Italy" , "Alpine district of Austria and Italy" .)