Latin word caesius comes from Proto-Indo-European *kh₂eyd-, and later Proto-Italic *kaidō (To cut, to hew, to fell.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *kh₂eyd- | Proto-Indo-European (ine-pro) | |
| *kaidō | Proto-Italic (itc-pro) | To cut, to hew, to fell. |
| caedo | Latin (lat) | Cut, hew, fell.. Defeat decisively (defeat with heavy losses to the enemy side).. Kill.. Strike, beat. |
| caesius | Latin (lat) | (of the eyes) Bluish-gray, gray-eyed, blue-eyed, cat-eyed; cutting, sharp. |