tu·ba /ˈtubə, ˈtju-/ 大號,風琴音栓之一種
Tu·ba n. Mus. (a) An ancient trumpet. (b) A sax-tuba. See Sax-tuba. ◄ ►
tuba n : the lowest brass wind instrument [syn: bass horn, sousaphone] [also: tubae (pl)]