SACKBUT

(from Old French saqueboute: pull-push), early trombone, invented in the 15th century, probably in Burgundy. It has thicker walls than the modern trombone, imparting a softer tone, and its bell is narrower. The sackbut answered the need for a lower-pitched trumpet that composers of the time sought. Its telescoping slide mechanism is retained in the modern trombone.