muniment

noun

1. (chiefly law) A deed, or other official document kept as proof of ownership or rights or privileges; an archived document. [from 15th c.]

2. (obsolete, in the plural) Things which a person or place is equipped with; effects, furnishings, accoutrements. [15th-19th c.]

3. (obsolete) Something used as a defence. [16th-19th c.]