Bob is confused about the Italian hobbit (5)
I believe the answer is:
bilbo
'hobbit' is the definition.
(Bilbo Baggins, a hobbit from The Lord of the Rings)
'bob is confused about the italian' is the wordplay.
'is confused' indicates an anagram.
'about' is an insertion indicator.
'the italian' becomes 'il' ('the' in Italian).
'bob' anagrammed gives 'bbo'.
'bbo' enclosing 'il' is 'BILBO'.
(Other definitions for bilbo that I've seen before include "Frodo's uncle (LOTR)" , "The Hobbit hero" , "Rapier - I blob (anag)" , "___ Baggins, a leading hobbit" , "sword" .)