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.

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 Syr·inx n.; pl. Syringes
 1. Mus. A wind instrument made of reeds tied together; -- called also pandean pipes.
 2. Anat. The lower larynx in birds.
 Note: ☞ In birds there are two laringes, an upper or true, but voiceless, larynx in the usual position behind the tongue, and a lower one, at or near the junction of the trachea and bronchi, which is the true organ of the voice.

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