An Etymological Dictionary of Astronomy and Astrophysics

A spherical body; sphere.
The planet Earth (usually preceded by the). A sphere on which is depicted a map of the Earth (terrestrial globe) or of the heavens (celestial globe).

Etymology (EN): M.E. globe, from M.Fr. globe, from L. globus “round body, ball, sphere,” cognate with Pers. guy, see below.

Etymology (PE): Guy “ball, sphere,” variants golulé, gullé, goruk, gulu, gudé; cf. Skt. guda- “ball, mouthful, lump, tumour,” Pali gula- “ball,”
Gk. gloutos “rump,” L. glomus “ball,” globus “globe,” Ger. Kugel, E. clot; PIE *gel- “to make into a ball.”