a. [ From 4th Pan. ] Of or relating to the god Pan. [ 1913 Webster ]

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 ]