birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disorder - a defect that is present at birth

septal defect - a congenital abnormality in the septum between the left and right sides of the heart

Fallot's syndrome, Fallot's tetralogy, tetralogy of Fallot - a congenital heart defect producing cyanosis; characterized by four symptoms: pulmonary stenosis and ventricular septal defect and malposition of the aorta over both ventricles and hypertrophy of the right ventricle