1.A musical instrument, consisting of a series of hemispherical glasses which, by touching the edges with the dampened finger, give forth the tones; it is now called the glass harmonica, to distinguish it from the common harmonica, formerly called the harmonicon.
2.A toy instrument of strips of glass or metal hung on two tapes, and struck with hammers.
3.A small wind musical instrument shaped like a flat bar with holes along the thin edges, held in the hand and producing notes from multiple vibrating reeds arranged inside along its length; it was formerly called the harmonicon. See harmonicon.
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