Where does “tuial” come from?

tuial (Old French) comes from Frankish þeutā, from Proto-Germanic þeutǭ, from Proto-Germanic þeutaną, from Proto-Indo-European tū-.

Ancestry of “tuial”, step by step

StepLanguageWordMeaning
1Frankishþeutāpipe
2Proto-GermanicþeutǭThat which causes a whirring, whistling, roaring,...
3Proto-Germanicþeutanąto howl, roar
4Proto-Indo-Europeantū-—
Every word from Proto-Indo-European tū- →Every word from Proto-Germanic þeutaną →Every word from Proto-Germanic þeutǭ →