Har-mōn'i-ca, n.

n. [Lat. harmonicus. See supra.]

1. A musical instrument invented by Dr. Franklin, in which the tones are produced by friction against the edges of a series of hemispherical glasses. Hebert.
2. A small, flat, wind instrument of music, in which the notes are produced by the vibration of metallic reeds; — mostly used as a toy for children.