something erected in memory of a person, event, etc., as a building, pillar, or statue

the Washington Monument.

any building, megalith, etc., surviving from a past age, and regarded as of historical or archaeological importance.

any enduring evidence or notable example of something

a monument to human ingenuity.

an exemplar, model, or personification of some abstract quality, esp. when considered to be beyond question

a monument of middle-class respectability.

an area or a site of interest to the public for its historical significance, great natural beauty, etc., preserved and maintained by a government.

a written tribute to a person, esp. a posthumous one.

Surveying . an object, as a stone shaft, set in the ground to mark the boundaries of real estate or to mark a survey station.

a person considered as a heroic figure or of heroic proportions

He became a monument in his lifetime.

Obsolete . a tomb; sepulcher.

a statue.

to build a monument or monuments to; commemorate

to monument the nation's war dead.

to build a monument on

to monument a famous site.

noun

cairn , cenotaph , column , commemoration , erection , footstone , gravestone , headstone , ledger , magnum opus , marker , masterpiece , mausoleum , memento , monolith , obelisk , pile , pillar , record , reminder , shrine , slab , statue , stele , stone , tablet , testament , token , tomb , tombstone , tower , tribute , witness , remembrance , cromlech , dolmen , memorial