certificate of title
1: a certificate of ownership stating that the title to the specified property is free and clear except for any encumbrance (as a mortgage) listed on it: as
a: a certificate issued by a motor vehicle registry – called also title;
b: a certificate issued by a registry of deeds see also torrens system
2: a document issued by a title abstracter (as an attorney) giving a legal opinion as to the status of a property's title based on a title search or abstract of title compare deed
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.