term:

Muniment

muniment n

[Anglo-French, from Middle French, defense, from Latin munimentum, from munire to fortify]
: a record (as a deed, statutory grant, or judgment) that passes title to real property and enables a person to defend the title or otherwise maintain a claim to real rights or privileges [ of title] often used in pl. [the s of which the chain of record title is formed “Connecticut General Statutes“]