Where does “scutum” come from?

scutum (Latin) comes from Proto-Indo-European skei-, from Proto-Indo-European sek- — to cut, cut off, sever.

Ancestry of “scutum”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	skei-	to cut, to divide, to separate; to cut, split; to...
2	Proto-Indo-European	sek-	to cut, cut off, sever

scutum — Etymology, Origin & Word History | Etymology Explorer