Where does “tommelfinger” come from?

tommelfinger (Norwegian Bokmål) comes from Norwegian Bokmål tommel, from Old Norse þumall, from Proto-Germanic þūmilaz, from Proto-Germanic þūmô, from Proto-Indo-European tūm-, from Proto-Indo-European tewh₂- — to swell; to crowd; to be strong.

tommelfinger (Norwegian Bokmål): a thumb

Definitions

  1. a thumb

Ancestry of “tommelfinger”, step by step

tommelfinger traces back through 3 separate lines of ancestry.

via Norwegian Bokmål tommel

StepLanguageWordMeaning
1Norwegian Bokmåltommela thumb
2Old Norseþumallthumb
3Proto-Germanicþūmilazthumb-covering; thumb-sheath
4Proto-Germanicþūmôthumb
5Proto-Indo-Europeantūm-to grow; to swell, to increase; to swell, be...
6Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong

via Norwegian Bokmål finger

StepLanguageWordMeaning
1Norwegian Bokmålfingera finger
2Old Norsefingrfinger
3Proto-Germanicfingrazfinger
4Proto-Indo-Europeanpenkʷrós

via Old Norse þumalfingr

StepLanguageWordMeaning
1Old Norseþumalfingr

Words derived from “tommelfinger

Every word from Proto-Indo-European tewh₂-Every word from Proto-Indo-European tūm-Every word from Proto-Germanic þūmô