landmarks is a form of:

Landmark



noun
1.
(Any prominent feature of the landscape marking a locality, event that is a turning point or is very important, object that marks a boundary of a tract of land. -land mine an explosive charge, hidden under the surface of the ground. -land reform reform of land for agriculture without land) useful landmark អ្វីៗសម្រាប់សំគាល់កន្លែង
Example: The invention of radio was a landmark in history.event was a landmark អ្វីៗដែលគួរកត់សំគាល់ក្នុងប្រវត្តិសាស្ដ្រ
2.
(បច្ចេកទេស) ព្រឹត្តិការណ៍សំខាន់បំផុត, បង្គោលសីមា
ENGLISH MEANING
noun
1.
A mark to designate the boundary of land; mark or fixed object (as a marked tree, a stone, a ditch, or a heap of stones) by which the limits of a farm, a town, or other portion of territory may be known and preserved.
2.
Any conspicuous object on land that serves as a guide; some prominent object, as a hill or steeple.