Source : Webster's Revised Unabridged Dictionary (1913)

Monument \Mon"u*ment\, n. [F., fr. L. monumentum, fr. monere to
   remind, admonish. See {Monition}, and cf. {Moniment}.]
   1. Something which stands, or remains, to keep in remembrance
      what is past; a memorial.

            Of ancient British art A pleasing monument.
                                                  --Philips.

            Our bruised arms hung up for monuments. --Shak.

   2. A building, pillar, stone, or the like, erected to
      preserve the remembrance of a person, event, action, etc.;
      as, the Washington monument; the Bunker Hill monument.
      Also, a tomb, with memorial inscriptions.

            On your family's old monument Hang mournful
            epitaphs, and do all rites That appertain unto a
            burial.                               --Shak.

   3. A stone or other permanent object, serving to indicate a
      limit or to mark a boundary.

   4. A saying, deed, or example, worthy of record.

            Acts and Monuments of these latter and perilous
            days.                                 --Foxe.

   Syn: Memorial; remembrance; tomb; cenotaph.

Source : WordNet®

monument
     n 1: a structure erected to commemorate persons or events [syn: {memorial}]
     2: an important site that is marked and preserved as public
        property
     3: a burial vault (usually for some famous person) [syn: {repository}]