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ENGLISH DICTIONARY

Noun

Definition 1:
• Any musical instrument which produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes, and without the vibration of the instrument itself adding considerably to the sound.

Definition 2:
• A form of combined speaking trumpet and ear trumpet.
Labels: dated

Definition 3:
• An instrument for greatly intensifying speech, consisting of a phonograph diaphragm arranged so that its action opens and closes valves, producing synchronous air blasts sufficient to operate a larger diaphragm with greater amplitude of vibration.
Labels: dated

Source and attribution
Wiktionary contributors, via Kaikki/Wiktextract. Derived from Wiktionary; CC BY-SA and GFDL terms apply. Source: https://en.wiktionary.org/wiki/aerophone