Pandean pipes \Pan*de"an pipes\, n. pl.,
A primitive wind instrument, consisting of a series of short
hollow reeds or pipes, graduated in length by the musical
scale, and fastened together side by side; a syrinx; a mouth
organ; -- said to have been invented by the god Pan. Called
also {pipes of Pan}, {Pan's pipes} and {Panpipes}.
[1913 Webster]