Šüvyrlu (gender unknown)
original: šüvə̑rlu (шӱвырлу)
tube through which the bag of a mouth-blown bagpipe, &c. is inflated
From "lu" [bone]; Definition in Mari dictionary: "bagpipe part used in inflation of bag"; NB¹: Not encountered in other sources; NB²: Compare Šüvyrpu (chanter & yoke); NB³: The Cyrillic letters л [L] and п [P] are easily confused by readers who are unfamiliar with that script.