Where does “Türspion” come from?

Türspion (German) comes from German Spion, from French espion, from Middle French espion, from Old French espion, from Frankish *spehō, from Frankish spehōn, from Proto-Germanic spehōną, from Proto-Indo-European speḱ- — to see, to look, to observe.

Türspion (German): spyhole

Definitions

  1. spyhole

Ancestry of “Türspion”, step by step

Türspion traces back through two separate lines of ancestry.

via German Spion

StepLanguageWordMeaning
1GermanSpionspy; peephole
2Frenchespionspy
3Middle Frenchespion—
4Old Frenchespionspy
5Frankish*spehō—
6Frankishspehōnto spy, watch; to peer, to look, to spy
7Proto-Germanicspehōnąto peer, look, spy
8Proto-Indo-Europeanspeḱ-to see, to look, to observe

via German tür

StepLanguageWordMeaning
1Germantürdoor rigid plane on a hinge
2Old High Germanturidoor
3Proto-West Germanic*durdoor, hatch, flap
4Proto-Germanic*durz—
5Proto-Indo-Europeandʰwṓrdoor
6Proto-Indo-Europeandʰwer-door
Every word from Proto-Indo-European speḱ- →Every word from Proto-Germanic spehōną →Every word from Frankish spehōn →