adjective bar·rel–and–pin

Definition of barrel–and–pin

  1. :  having or consisting of a rotating cylinder studded with pins or pegs and used in a mechanical musical instrument (such as a music box, barrel organ, or barrel piano) to activate the instrument’s sound-producing mechanism … there is the spring, which pumps the little bellows and works the little barrel-and-pin device that releases the air into the pipes that make the whistle. — Robertson Davies, World of Wonders, 1975

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First Known Use of barrel–and–pin


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capable of being understood in two ways

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