闭塞擦音 bìsècāyīn affricate Origin Definitions Defs Strokes Stroke Words Sentences Sents 闭塞 閉塞 bìsè occlusive (Phonetics) sound produced by stopping the airflow; (Medicine) describing an obstructed or closed off passage擦音 cāyīn fricative A consonant sound produced by forcing air through a narrow channel in the vocal tract; also called 摩擦音 mócāyīn.