Definition of landmark
1
: an object (such as a stone or tree) that marks the boundary of land
2a
: a conspicuous object on land that marks a locality
b
: an anatomical structure used as a point of orientation in locating other structures
3
: an event or development that marks a turning point or a stage
4
: a structure (such as a building) of unusual historical and usually aesthetic interest
especially
: one that is officially designated and set aside for preservation
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share landmark
Time Traveler for landmark
The first known use of landmark was before the 12th century
See more words from the same century