Where does “caesaculum” come from?

caesaculum (Latin) comes from Latin caesus, from Latin caedō, from Proto-Italic kaidō, from Proto-Indo-European keh₂id-.

Ancestry of “caesaculum”, step by step

Step	Language	Word	Meaning
1	Latin	caesus	cut, hewn, felled; struck, beaten; killed
2	Latin	caedō	—
3	Proto-Italic	kaidō	to cut, to hew, to fell
4	Proto-Indo-European	keh₂id-	—

caesaculum — Etymology, Origin & Word History | Etymology Explorer