SYRINX

Syr″inx (?), n.; pl. Syringes (#). [] 1. 1. (Mus.) A wind instrument made of reeds tied together; — called also pandean pipes.
2. 2. (Anat.) The lower larynx in birds.
☞ 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.