Where does “tunneliaukko” come from?

tunneliaukko (Finnish) comes from Finnish tunneli, from English Tunnel, from Old French tonel, from Old French tone, from Late Latin tunna, from Proto-Celtic tunna — hide, skin.

tunneliaukko (Finnish): tunnel opening, tunnel entrance

Definitions

  1. tunnel opening, tunnel entrance

Ancestry of “tunneliaukko”, step by step

tunneliaukko traces back through two separate lines of ancestry.

via Finnish tunneli

StepLanguageWordMeaning
1Finnishtunnelitunnel
2EnglishTunnelAn underground or underwater passage
3Old Frenchtonelbarrel
4Old Frenchtonelarge barrel
5Late Latintunnatun, box
6Proto-Celtictunnahide, skin

via Finnish aukko

StepLanguageWordMeaning
1Finnishaukkohole; gap; opening
2Proto-Finnicaukkohole; gap, opening
Every word from Proto-Celtic tunna →Every word from Late Latin tunna →Every word from Old French tone →
tunneliaukko — Etymology, Origin & Word History | Etymology Explorer