(now chiefly historical) A white witch.

plural of planet-ruler

plural of planet wheel

A gear wheel that revolves around the wheel with which it meshes, in an epicyclic train.

(UK, slang) The Isle of Thanet.

Earth; the third planet in the Solar System

Alternative form of exoplanet

plural of exo-planet

plural of planet gear

(engineering) An epicyclic gear; the middle gears in a planetary gear system, spun by the central sun gear