larynx

noun1

1. •
   A hollow muscular organ of the neck of mammals situated just below where the tract of the pharynx splits into the trachea and the oesophagus. It is involved in breath control and protection of the trachea, and, as it houses the vocal cords, sound production.

   • The differences in the voices of man and woman cannot but have been always observed; and their larynxes exhibit, on a merely superficial inspection, a great disproportion in size. — 1819