Pectoral, from the Latin pectoralis (plural pectorales), "pertaining to the breast/chest", can refer to: Pectoral cross, a cross worn on the chest a decorative, usually jeweled version of a gorget Pectoralis major muscle Pectoralis minor muscle Pectoral fins of an aquatic animal, such as a whale or fish, are located on both sides of the body. In marine mammals, these fins are homologous with human arms… (More on Pectoral)