胸大肌 xiōngdàjī pectoral muscle Origin Definitions Defs Strokes Stroke Words Sentences Sents 胸 xiōng noun chest the part of the body between the neck and the stomach; chest; bosom; thorax大 dà adjective big big; large; great; vast; high in scale or intensity; (of a person) old; adult肌 jī noun muscle (bound form) muscle; flesh