Where does “kalkkala” come from?

kalkkala (Finnish) comes from Finnish la, from Finnish lauantai, from Old Norse laugardagr, from Old Norse laug, from Proto-Germanic laugō, from Proto-Indo-European lewh₃- — to wash.

Ancestry of “kalkkala”, step by step

kalkkala traces back through two separate lines of ancestry.

via Finnish la

StepLanguageWordMeaning
1FinnishlaAbbreviation of lauantai
2FinnishlauantaiSaturday
3Old NorselaugardagrSaturday
4Old Norselaugbath; hot spring; first-person singular past...
5Proto-Germaniclaugōbath, wash; soap, lye
6Proto-Indo-Europeanlewh₃-to wash

via Finnish kalkkaa

StepLanguageWordMeaning
1Finnishkalkkaa—
Every word from Proto-Indo-European lewh₃- →Every word from Proto-Germanic laugō →Every word from Old Norse laug →