Where does “kroolaaminen” come from?

kroolaaminen (Finnish) comes from Finnish kroolata, from Finnish krooli, from English crawl, from Middle English crawlen, from Old Norse krafla, from Proto-Germanic krablōną, from Proto-Germanic krabbōną, from Proto-Indo-European gerbʰ- — to turn, bend, twist, wind; to tie, bind...

Ancestry of “kroolaaminen”, step by step

StepLanguageWordMeaning
1FinnishkroolataTo crawl
2Finnishkroolicrawl, front crawl
3EnglishcrawlTo creep; to move slowly on hands and knees, or...
4Middle Englishcrawlento crawl
5Old Norsekrafla
6Proto-Germanickrablōną
7Proto-Germanickrabbōnąto scratch, scrape
8Proto-Indo-Europeangerbʰ-to carve
9Proto-Indo-Europeanger-to turn, bend, twist, wind; to tie, bind...
Every word from Proto-Indo-European ger-Every word from Proto-Indo-European gerbʰ-Every word from Proto-Germanic krabbōną