An organ pipe is a sound-producing element of the pipe organ that resonates at a specific pitch when pressurized air (commonly referred to as wind) is driven through it. Each pipe is tuned to a specific note of the musical scale. A set of organ pipes of similar timbre tuned to a scale is known as a rank or a stop.
Noun 1. the flues and stops on a pipe organ (synonym) pipe, pipework (hypernym) wind instrument, wind (hyponym) flue pipe, flue, labial pipe (part-holonym) organ, pipe organ