Voice-box definition

A tube composed of cartilage and membrane that extends from below the voice box into the chest where it splits into two branches, the bronchi, that lead to each lung.

We even have a sub bond villain in a wheelchair using a voice box to speak.

The sound is produced in the larynx or voice box.

As Animal Planet explains, the rigid structure of their voice box and the smaller chest cavity limits the domestic cat's range, but not its ability to use sounds for communication.