Definition of: emissary

(em′ə·ser′ē) noun plural ·sar·ies
1. A person sent on a mission as an agent or representative of a government, as to negotiate or gather information.
2. A secret agent; spy.
3. Archaic A channel, as for water: also em·is·sa·ri·um (em′ə·sā′rē·əm).
4. Archaic An excretory or connecting canal in the body. See synonyms under SPY.
—adjective Sent forth or out. [<L emissarius <emittere. See EMIT.]