Where does “țevușoară” come from?

țevușoară (Romanian) comes from Romanian țeavă, from Old Church Slavonic цѣвь, from Proto-Slavic cěvь, from Proto-Balto-Slavic koi-u-i-, from Proto-Indo-European koy-w-.

Ancestry of “țevușoară”, step by step

Step	Language	Word	Meaning
1	Romanian	țeavă	pipe, tube
2	Old Church Slavonic	цѣвь	—
3	Proto-Slavic	cěvь	tube, spool
4	Proto-Balto-Slavic	koi-u-i-	—
5	Proto-Indo-European	koy-w-	—

Every word from Proto-Indo-European koy-w- →Every word from Proto-Balto-Slavic koi-u-i- →Every word from Proto-Slavic cěvь →