planet

noun Etymology: Middle English planete, from Anglo-French, from Late Latin planeta, modification of Greek planēt-, planēs, literally, wanderer, from planasthai to wander — more at floor Date: 13th century 1. a. any of the seven celestial bodies sun, moon, Venus, Jupiter, Mars, Mercury, and Saturn that in ancient belief have motions of their own among the fixed stars b. (1) any of the large bodies that revolve around the sun in the solar system (2) a similar body associated with another star c. earth — usually used with the 2. a celestial body held to influence the fate of human beings 3. a person or thing of great importance ; luminary • planetlike adjective