肋膜炎 lèimóyán pleurisy Origin Definitions Defs Strokes Stroke Words Sentences Sents 肋膜 lèimó pleura A membrane that lines the thoracic cavity and covers the lungs, acting to reduce friction during breathing; also known as 胸膜 xiōngmó.炎 yán noun inflammation (bound form) inflammation; infection; often used as a suffix for medical conditions ending in "-itis"