Name in Arratia (Bizkaia (Biscay)); In »Orotariko Euskal Hiztegia« [Comprehensive Basque dictionary] dubiously defined as "auntzorri-adarrez egiña, albokearen adar biak eustekoa" [yoke, made from horns, to support both "branches" of the Alboka]; NB¹: Similar terms ("Buztarri" (Lower Navarra, and Bizkaia), "Buzterri" (Bizkaia), and "Buzturri" (Bizkaia: Arratia) are apparently used only for its common meaning, and for "a couple / yoke of bullocks / cows"; NB²: ➺ Busterri, and Ustarri.