WordNet (r) 3.0 (2006):
title deed n 1: a legal document proving a person's right to propertyBouvier's Law Dictionary, Revised 6th Ed (1856):
TITLE DEEDS. Those deeds which are evidences of the title of the owner of an estate. 2. The person who is entitled to the inheritance has a right to the possession of the title deeds. 1 arr. & Marsh. 653.