planet

/ˈplænɪt/
noun
  1. A large round object in space that orbits a star, such as Earth, Mars, or Jupiter.
    • Astronomers discovered a new planet in a distant solar system.
    • The planet Mars has a reddish color because of its iron-rich soil.
    • Earth is the third planet from the Sun.
  2. The Earth, considered as one world among others, often used to talk about the environment or all people.
    • We must take care of our planet by reducing pollution.
    • People from every corner of the planet came to the festival.
    • The documentary showed the beauty of the planet from space.