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

Step	Language	Word	Meaning
1	Frankish	þeutā	pipe
2	Proto-Germanic	þeutǭ	That which causes a whirring, whistling, roaring,...
3	Proto-Germanic	þeutaną	to howl, roar
4	Proto-Indo-European	tū-	—

tuial — Etymology, Origin & Word History | Etymology Explorer