Muniment, n.
Etymology: [L. munimentum, fr. munire to fortify. See Munition.]
1. The act of supporting or defending. [Obs.]
2. That which supports or defends; stronghold; place or means of defense; munition; assistance. "Other muniments and petty helps." Shak.
3. (Law)
A record; the evidences or writings whereby a man is enabled to defend the title to his estate; title deeds and papers. Blount. Muniment house or room, that room in a cathedral, castle, or other public building, which is used for keeping the records, charters, seals, deeds, and the like. Gwilt.