- pectoral, pectoral muscle, pectoralis, musculus pectoralis, pecs - either of two large muscles of the chest
--1 is a kind of skeletal muscle, striated muscle
--1 is a part of thorax, chest, pectus
--1 has particulars:pectoralis major, musculus pectoralis major, greater pectoral muscle; pectoralis minor, musculus pectoralis minor, smaller pectoral muscle