pigeon-chest

noun Pathology.

1. chicken breast.

noun

1. a deformity of the chest characterized by an abnormal protrusion of the breastbone, caused by rickets or by obstructed breathing during infancyAlso called: chicken breast

n.

1. A chest deformity marked by a projecting sternum, often occurring as a result of infantile rickets.chicken breast pectus carinatum