Any tube that produces sound when air is forced through it. The organ employs a series of pipes to produce sound; horns and woodwinds employ a single pipe. An end-blown flute with three finger holes, usually played with a drum called a tabor. A bagpipe.Generic term for hollow tube or cylinder that forms part of a wind instrument. Sound is produced when air vibrates within the pipe. more specifically, a small, simple fipple flute is often called a pipe.