A trombone is a large musical instrument of the brass family. It consists of two long oval tubes, one of which can be pushed backwards and forwards to play different notes.
trombone in British English
(trɒmˈbəʊn)
noun
1.
a brass instrument, a low-pitched counterpart of the trumpet, consisting of a tube the effective length of which is varied by means of a U-shaped slide. The usual forms of this instrument are the tenor trombone (range: about two and a half octaves upwards from E) and the bass trombone (pitched a fourth lower)
2.
a person who plays this instrument in an orchestra
Derived forms
trombonist (tromˈbonist)
noun
Word origin
C18: from Italian, from tromba a trumpet, from Old High German trumba
trombone in American English
(trɑmˈboʊn; ˈtrɑmˌboʊn)
noun
a large brass instrument consisting of a long tube bent parallel to itself twice and ending in a bell mouth: it is of two types, the slide trombone, in which different tones are produced by moving the slide, or movable section of the tube, in or out, and the valve trombone, played, like the trumpet, with valves