pōˈzau̇nə noun
( plural posau·nen -nən)
Etymology: German, from Middle High German busīne, busūne trumpet, from Old French buisine, busine, from Latin bucina, probably from bu- (from bos head of cattle) + -cina (from canere to sing) — more at cow , chant
1. : trombone
2. : a reed stop in a pipe organ imitating the trombone tone