Pec″to‐ral, n. [L. pectorale a breastplate, neut. of pectoralis.] 1. A covering or protecting for the breast.
2. (Eccl.) (a) A breastplate, esp. that worn by the Jewish high person. (b) A clasp or a cross worn on the breast.
3. A medicine for diseases of the chest organs, especially the lungs.