A trombone. Obsolete.

Music. A large loud-toned brass instrument of the trumpet kind, consisting of a long tube bent twice upon itself, and ending in a bell mouth; the…

= posaune, n. 1. Now historical.

(a) a pump used to circulate mud through a rotary drilling column; (b) U.S. slang, a trombone.

a slide-trombone.

A sliding part of some mechanism; a device which slides or may be slid; New Zealand, a serving hatch (see sense j); Music, on wind instruments…