γῆτος

From LSJ

μεγάλα ὠφελήσεσθε πρὸς ἱστορίαν τῶν κοινῶν → that will be of great benefit to you in order to understand public affairs

Source

Spanish (DGE)

-εος, τό bot. cebolla, Allium Cepa L., Moer.103.