(1):

(n.) A memorandum; a record.

(2):

(n.) Memory; remembrance.

(3):

(n.) A written representation of facts, addressed to the government, or to some branch of it, or to a society, etc., - often accompanied with a petition.

(4):

(n.) A species of informal state paper, much used in negotiation.

(5):

(n.) Anything intended to preserve the memory of a person or event; something which serves to keep something else in remembrance; a monument.

(6):

(a.) Mnemonic; assisting the memory.

(7):

(a.) Serving to preserve remembrance; commemorative; as, a memorial building.