serbs is a form of:

Terrestrial



adjective
1.
(Of this world, worldly, living on land rather than in water in the air, etc) នៃផែនដី, ដែលដុះនៅលើដី (មិនដុះក្នុងទឹក), ដែលរស់នៅលើទីគោក, នៃលោកិយ, នៃកម្ម, នៃកម្មលោក
Example: Terrestrial matters, terrestrial globe, terrestrial magnetism, the terrestrial surface of the earth, Cats are terrestrial animals, Fishes and most birds are not terrestrial.
ENGLISH MEANING
noun
1.
An inhabitant of the earth.
adjective
1.
Of or pertaining to the earth; existing on the earth; earthly; as, terrestrial animals.
2.
Of or pertaining to the world, or to the present state; sublunary; mundane.
3.
Representing, or consisting of, the earth; as, a terrestrial globe.
4.
Consisting of land, in distinction from water; belonging to, or inhabiting, the land or ground, in distinction from trees, water, or the like; as, terrestrial serpents.
5.
Adapted for the observation of objects on land and on the earth; as, a terrestrial telescope, in distinction from an astronomical telescope.