Sack'but, n.

n. [Fr. saquebute, from Sp. sacabuche, a sackbut, the tube or pipe of a pump, from sacar, to draw, and buche, the maw or stomach, because they who blow this instrument draw up their breath with great force, as it were from the stomach; Pg. sacabuça, saquebuza.] (Mus.) A brass wind instrument of music, like a trumpet, so contrived that it can be lengthened or shortened according to the tone required; — said to be the same as the trombone. Moore.