European in need of right anorak (4)
I believe the answer is:
geek
'anorak' is the definition.
(both can mean a nerdy person)
'european in need of right' is the wordplay.
'european' becomes 'greek' (Greece is in Europe).
'in need of' suggests deleting specific letters.
'right' becomes 'r' (common abbreviation).
'greek' with 'r' taken away is 'GEEK'.
(Other definitions for geek that I've seen before include "social misfit" , "anorak" , "PC expert?" , "Obsessive enthusiast" , "Computer obsessive" .)