the tenth cranial nerve, which supplies the heart, lungs, and viscera
Word origin
C19: from Latin vagus wandering
vagus in American English
(ˈveɪgəs)
nounWord forms: pluralˈvaˌgi (ˈveɪˌdʒaɪ)
either of the tenth pair of cranial nerves, arising in the medulla oblongata and providing parasympathetic innervation to the larynx, lungs, heart, esophagus, and most of the abdominal organs