1. a brass musical instrument with a brilliant tone; has a narrow tube and a flared bell and is played by means of valves
2. A wind instrument of great antiquity, much used in war and military exercises, and of great value in the orchestra. In consists of a long metallic tube, curved (once or twice) into a convenient shape, and ending in a bell. Its scale in the lower octaves is limited to the first natural harmonics; but there are modern trumpets capable, by means of valves or pistons, of producing every tone within their compass, although at the expense of the true ringing quality of tone.
3. proclaim on, or as if on, a trumpet
Liberals like to trumpet their opposition to the death penalty
4. play or blow on the trumpet
5. utter in trumpet-like sounds
Elephants are trumpeting
6. To publish by, or as by, sound of trumpet; to noise abroad; to proclaim; as, to trumpet good tidings.
7. To sound loudly, or with a tone like a trumpet; to utter a trumplike cry.