n. [ From It. concerto a concert. ] A small musical instrument on the principle of the accordion. It is a small elastic box, or bellows, having free reeds on the inside, and keys and handles on the outside of each of the two hexagonal heads. [ 1913 Webster ]
n. [ See Concertina. ] (Mus.) A piece for one or more solo instruments with orchestra; -- more concise than the
n. Act of concerting; adjustment. [ R. ] Young. [ 1913 Webster ]