carina

Definition of carina of trachea
National Cancer Institute

carina of trachea

(kuh-RY-nuh ... TRAY-kee-uh)
A ridge at the base of the trachea (windpipe) that separates the openings of the right and left main bronchi (the large air passages that lead from the trachea to the lungs). Also called tracheal carina.

Source: NCI Dictionary of Cancer Terms