Noun planet has 2 senses
  1. planet - any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system
    --1 is a kind of
    celestial body, heavenly body
    --1 is a member of solar system
    --1 has part: biosphere
    --1 has particulars:
     asteroid, minor planet, planetoid; evening star, Hesperus, Vesper; morning star, daystar, Phosphorus; superior planet; terrestrial planet
  2. satellite, planet - a person who follows or serves another
    --2 is a kind of follower