Planet

Part of speech: noun (n.)

1. A celestial body which revolves about the sun in an orbit of a moderate degree of eccentricity. It is distinguished from a comet by the absence of a coma, and by having a less eccentric orbit. See Solar system.

2. A star, as influencing the fate of a men. There's some ill planet reigns. Shak. Planet gear. (Mach.) See Epicyclic train, under Epicyclic. -- Planet wheel, a gear wheel which revolves around the wheel with which it meshes, in an epicyclic train.