tracheotomy
noun [ C or U ] uk/ˌtræk.iˈɒt.ə.mi/ us/ˌtreɪ.kiˈɑː.t̬ə.mi/ (also tracheostomy, uk/-ˈɒst.ə.mi/ us/-ˈɑːs.t̬ə.mi/)
气管切开术
a medical operation in which an opening is made in a person's neck and trachea, usually in order to help them to breathe