1. (n.) One dispatched upon an errand or mission; a messenger; esp., a person deputed by a sovereign or a government to negotiate a treaty, or transact other business, with a foreign sovereign or government; a minister accredited to a foreign government. An envoy's rank is below that of an ambassador.

2. (n.) An explanatory or commendatory postscript to a poem, essay, or book; -- also in the French from, l'envoi.

agent ambassador ambassadress apostolic delegate attache bearer career diplomat carrier chancellor charge commercial attache commissar commissary commissionaire commissioner consul consul general consular agent councillor courier delegate diplomat diplomatic diplomatic agent diplomatist emissary envoy extraordinary foreign service officer herald internuncio legate messenger military attache minister minister plenipotentiary minister resident nuncio plenipotentiary representative resident secretary secretary of legation vice-consul vice-legate