earth
[urth] - noun
1. a: the land surface of the world.
2. the third planet from the sun, having a sidereal period of revolution about the sun of 365.26 days at a mean distance of approximately 149 million kilometers (92.96 million miles), an axial rotation period of 23 hours 56.07 minutes, an average radius of 6,378 kilometers (3,963 miles), and a mass of approximately 5.974 × 1024kilograms (1.317 × 1025 pounds).
3. the realm of mortal existence; the temporal world.

