An envoy, ambassador, or delegate sent to represent a country or organization; an emissary on a mission.
国王は友好関係の証として使節を派遣した。
The king sent an envoy as a sign of friendly relations.
平和会議に各国の使節が集まった。
Envoys from various countries gathered at the peace conference.
彼は国の使節として海外へ赴任した。
He was posted abroad as an envoy of his country.