Harmonium

n.

1.

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.

Noun

1.

harmonium - a free-reed instrument in which air is forced through the reeds by bellows Synonyms: reed organ, organ

Hammond organ, baroque organ, calliope, calliophone, choralcelo, electric organ, electro-pneumatic organ, hydraulic organ, melodeon, melodica, orchestrelle, organ, organophone, pipe organ, reed organ, seraphine, steam organ, symphonion, tracker-action organ, tubular-pneumatic organ, vocalion