HARMONIUM

Har‐mo″ni‐um (här‐mō″nĭ‐ŭm), n. [[NL. See Harmony. ]] A musical instrument, resembling a small organ and especially designed for church music, in which the tones are produced by forcing air by means of a bellows so as to cause the vibration of free metallic reeds. It is now made with one or two keyboards, and has pedals and stops.