Definition of "syrinx"

Actually, to cut a long story short, he began...well, playing with a rather different sort of pipe. Or syrinx, as we called it. He obviously thought he was alone.

1982, John Fowles, Mantissa

Inside, somebody was playing a duet on syrinx and lyre.

2006, Thomas Pynchon, Against the Day, Vintage, published 2007, page 247

The role of the syrinx in psittacine sound production is still under examination, and probably differs from that of songbirds.

1999, Irene M. Pepperberg, The Alex Studies: Cognitive and Communicative Abilities of Grey Parrots, published 2002, page 293

The primary sound-producing organ in a bird is the syrinx and the secondary system aiding sound production consists of the larynx, mouth, tongue and laryngeal muscles.

2007, Gisela Kaplan, Tawny Frogmouth, page 121

The organ responsible for producing sounds during song is the syrinx, located where the trachea joins the bronchi of the two lungs (Fig. 9.14).

2010, Peter Simmons, David Young, Nerve Cells and Animal Behaviour, 3rd edition, page 247