What is the medical term for the heel bone?

The medical term for the heel bone is "calcaneus." This term is derived from Latin, where "calcaneus" translates to "heel." It specifically refers to the large bone that forms the foundation of the rear part of the foot and plays a crucial role in walking and bearing weight. The calcaneus is one of the key bones that provide stability and support during movement, particularly in activities that involve standing and walking.

Other terms listed do not relate to the heel bone. For instance, bromopnea refers to a foul-smelling breath, not a bone structure. Bradycardia is a medical condition characterized by an abnormally slow heart rate. Conversely, bronchiectasis is a condition involving the bronchial tubes of the lungs, causing them to become damaged and widened due to chronic infection or inflammation. Thus, "calcaneus" is the only option that correctly identifies the heel bone.