Appreciate Italian's figure (5)
I believe the answer is:
digit
'figure' is the definition.
(thesaurus)
'appreciate italian's' is the wordplay.
'appreciate' becomes 'dig' (I've seen this before).
'italian' becomes 'it'.
'dig'+'it'='DIGIT'
(Other definitions for digit that I've seen before include "Finger; numeral" , "one of several at hand" , "one's given?" , "Single number" , "Single numeral" .)