Where does “каско” come from?

каско (Russian) comes from Spanish casco, from Spanish cascar, from Latin quassō, from Latin -tō, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

каско (Russian): hull insurance (insurance for automobiles, ships,...

Definitions

hull insurance (insurance for automobiles, ships,...

Ancestry of “каско”, step by step

Step	Language	Word	Meaning
1	Spanish	casco	helmet; crown; hulk
2	Spanish	cascar	to crack, to split; to hit; to wank
3	Latin	quassō	to shake repeatedly, to quake
4	Latin	-tō	Forms here
5	Latin	-tus	Forms the past participle of verbs; Forms...
6	Proto-Italic	-tus	—
7	Proto-Indo-European	-tus	Derives action nouns from verb roots

Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin -tō →