harmonica -
A musical wind instrument with a series of holes for the player to blow into, each hole producing a different note.
harmonica -
A musical instrument, consisting of a series of hemispherical glasses which, by touching the edges with the dampened finger, give forth the tones.
harmonica -
A toy instrument of strips of glass or metal hung on two tapes, and struck with hammers.
Wikipedia
The harmonica, also called harp, French harp, blues harp, and mouth organ, is a free reed wind instrument used primarily in blues and American folk music, jazz, country music, and rock and roll. It is played by blowing air into it or drawing air out by placing lips over individual holes (reed chambers) or multiple holes. The pressure caused by blowing or drawing air into the reed chambers causes a reed or multiple reeds to vibrate up and down creating sound.
OmegaWiki Dictionary
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harmonica A free reed musical wind instrument which produces notes according to the player's mouth placement over the different airways.
harmonica A musical instrument that uses a series of glass bowls graduated in size to produce musical tones by means of friction.