The crossword solution for the term PLANET, IN VERSE is ORB. ORB is a three-letter word that is often used to refer to a planet or celestial body. It is derived from the Latin word 'orbis, ' which means circle or ring. In astronomy, an ORB is a spherical object that orbits around a larger object, such as a star or a planet. The term is also used to describe the shape of a planet or other celestial body.