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
information: knowledge acquired through study or experience or instruction
samisen: a Japanese stringed instrument resembling a banjo with a long neck and three strings and a fretted fingerboard and a rectangular soundbox; played with a plectrum