tromboni

The most convenient and natural order is, perhaps, the following: the upper staff may have the flute-part, because it has the highest notes, and, therefore, requires most room above the staff; then follow the parts for the hautboys, clarinets, horns, bassoons, tromboni, trumpets, and drums; the upper half of the page thus containing the wind-instruments: the lower half belongs to the violins, viola, voices, violoncello, and double base.

1834, Arnold Merrick, transl., Methods of Harmony, Figured Base, and Composition, translation of original by Johann Georg Albrechtsberger, page 303

But while the voices have immovable material, the groups of instruments, composing an orchestra of cornetti, viols in various sizes, and tromboni, present a sharp contrast.

1950, Leo Schrade, Monteverdi, Creator of Modern Music, page 260