|1.||[ noun ] (astronomy) the 3rd planet from the sun; the planet on which we live|
"the Earth moves around the sun" "he sailed around the world"
|Related terms:||terrestrial_planet solar_system land sky atmosphere hemisphere lithosphere hydrosphere Van_Allen_belt|
|2.||[ noun ] any object with a spherical shape|
"a ball of fire"
|Related terms:||sphere spherule fireball mothball crystal_ball globule time-ball pellet bolus fireball conglobate|
|3.||[ noun ] (geography) a sphere on which a map (especially of the earth) is represented|
|Related terms:||sphere model model celestial_globe|