Deed showing legal right to a property (5)
I believe the answer is:
title
'deed showing legal right to a property' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for title that I've seen before include "Name of, eg, book" , "Deed showing legal right to a property" , "Identifying name" , "inscription" , "Name or designation" .)