Where does “kasko” come from?

kasko (Esperanto) comes from Polish kask, from French casque, from Spanish casco, from Spanish cascar, from Latin quassō, from Latin -tō, from Latin -tus, from Proto-Italic -tus — Derives action nouns from verb roots.

kasko (Esperanto): helmet

Definitions

  1. helmet

Ancestry of “kasko”, step by step

kasko traces back through 3 separate lines of ancestry.

via Polish kask

StepLanguageWordMeaning
1Polishkaskhelmet
2Frenchcasquehelmet; hard hat; headphones
3Spanishcascohelmet; crown; hulk
4Spanishcascarto crack, to split; to hit; to wank
5Latinquassōto shake repeatedly, to quake
6Latin-tōForms here
7Latin-tusForms the past participle of verbs; Forms...
8Proto-Italic-tus
9Proto-Indo-European-tusDerives action nouns from verb roots

via Italian casco

StepLanguageWordMeaning
1Italiancascohelmet; crash helmet; hair dryer

via Russian каска

StepLanguageWordMeaning
1Russianкаскаhelmet; hard hat
Every word from Proto-Indo-European -tus