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.

Source: wiktionary

The tromboni, trumpets, and ophecleidi carried every thing before them.

Source: wiktionary

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.

Source: wiktionary