harmonica > define

noun

• A small rectangular free-reed instrument having a row of free reeds set back in air holes and played by blowing into the desired hole.
  • synonyms: mouth organ, harp, mouth harp

• (n.) A musical instrument, consisting of a series of hemispherical glasses which, by touching the edges with the dampened finger, give forth the tones.
• (n.) A toy instrument of strips of glass or metal hung on two tapes, and struck with hammers.