Definition of "harmonica" []

• Music A small rectangular instrument consisting of a row of free reeds set back in air holes, played by exhaling or inhaling. Also called mouth harp, mouth organ; also called regionally French harp. (noun)
• Music A glass harmonica. (noun)
• Music An instrument consisting of tuned strips of metal or glass fixed to a frame and struck with a hammer. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Clutch played beefy, beery blues-rock, with vintage guitar riffs and growly vocals upholstered in harmonica and organ."
• "With its compact design, the rugged, industry standard IP 20 model is also compatible for mating with multiport 'harmonica'-style RJ 45 jacks."
• "But Andrew had never thought the harmonica was a toy."