Pectus | Webster's Dictionary of the English Language

pectus
pectus, ŏris, n. [kindred with the Sanscr. vakshas, pectus], the breast, in men and animals. I Lit...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
pectus
pectus oris, n PAC-, a breast, breast-bone : pectore in adverso ensem Condidit, V.: in pectus cadi...

An Elementary Latin Dictionary