Stēth'o-scōpe, n.

n. [Fr. stethoscope, fr. Gr. στήθος, the breast, and σκοπεῖν, to examine.] A tube of metal, wood, or other material, so constructed that, when applied to the human chest, the operator may hear sounds within, and judge of the regular action or condition of the part thus examined, as the heart, the lungs, &c.