bronchial (adj.)youdaoicibaDictYouDict[bronchial 词源字典]
c. 1735, from Late Latin bronchus, from Greek bronkhos "windpipe, throat" (from PIE *gwro-nkh-, from root *gwere- (4) "to swallow;" see voracity) + -al (1). bronchial tubes is from 1847.[bronchial etymology, bronchial origin, 英语词源]