nuncio (n<<schwa>>n-shee-oh), n.[Italian, fr. Latin nunciare “to announce”] 1. A papal ambassador to a foreign court or government; a representative of the Vatican in a country that maintains diplomatic relations with it. — Also termed nuncius; nuntio. Cf. legatus a latere under LEGATUS; INTERNUNCIO(3); LEGATE(3).2.Archaic. A messenger.

[Blacks Law 8th]