Bellows are a device used to produce a stream of air by expanding and contracting. They consist of a flexible structure that can be compressed to push air out and expanded to draw air in. This airflow is used to create sound in musical instruments, such as organs or bagpipes, and to intensify fires by supplying oxygen. Bellows are commonly found in both musical instruments and tools where controlled airflow is necessary, contributing to sound production or facilitating other functions.

What are "bellows"?

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