Where does “vauvasänky” come from?

vauvasänky (Finnish) comes from Finnish sänky, from Swedish säng, from Old Swedish siang, from Old Norse sæing, from Old Norse sæng — a late variant of sæing.

Ancestry of “vauvasänky”, step by step

vauvasänky traces back through two separate lines of ancestry.

via Finnish sänky

StepLanguageWordMeaning
1Finnishsänkybed, bedstead; sex, especially in the expressions...
2Swedishsänga bed; a piece of furniture used for sleeping
3Old Swedishsiang
4Old Norsesæingbed
5Old Norsesænga late variant of sæing

via Finnish vauva

StepLanguageWordMeaning
1Finnishvauvababy; a baby animal
Every word from Old Norse sængEvery word from Old Norse sæingEvery word from Old Swedish siang