Main Entry:

land·mark

Pronunciation:

\-ˌmärk\

Function:

noun

Date:

before 12th century

1: an object (as a stone or tree) that marks the boundary of land2 a: a conspicuous object on land that marks a locality b: an anatomical structure used as a point of orientation in locating other structures3: an event or development that marks a turning point or a stage4: a structure (as a building) of unusual historical and usually aesthetic interest ; especially : one that is officially designated and set aside for preservation