vagusEnglishOxford Dictionary of Englishvagus /ˈveɪɡəs / ▸ noun (plural vagi /ˈveɪdʒʌɪ /) Anatomy (also vagus nerve) each of the tenth pair of cranial nerves, supplying the heart, lungs, upper digestive tract, and other organs of the chest and abdomen. – ORIGIN mid 19th century: from Latin (see vague).