Taken from Lumet, it lends book name (5)
I believe the answer is:
title
'book name' is the definition.
(I've seen this in another clue)
'taken from lumet it lends' is the wordplay.
'taken from' indicates a hidden word.
'TITLE' is hidden in the letters of 'lumet it lends'.
(Other definitions for title that I've seen before include "Proprietorship" , "Legal possession" , "Name, honorific" , "Championship -- form of address" , "confers ownership" .)