syrinx
syr.inx \'sir-in(k)s\ \s*-'rin-.ge-z, -'rin-.je-z\ n or sy.rin.ges or syr.inx.es [LL, fr. Gk] [NL, fr. Gk, panpipe] pl 1: PANPIPE 2: the vocal organ of birds that is a special modification of the lower par t of the trachea or of the bronchi or of both