Webster’s Revised Unabridged Dictionary · 1913
Internuncio
In′ter·nun′ci·o (·shĭ·ō or ·shō), n.; pl. Internuncios (#). [L. internuntius; inter between + nuntius, nuncius, messenger: cf. It. internunzio. See Nuncio.]
1. A messenger between two parties. Johnson.
2. A representative, or chargé d'affaires, of the pope at a foreign court or seat of government, ranking next below a nuncio.
☞ This title was formerly given also to the Austrian envoy at Constantinople.