en·voy /ˈɛnˌvɔɪ, &dɪvɪdɛ;ˈɑn-/
  外交使節,特使
  En·voy n.
  1. 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.  An explanatory or commendatory postscript to a poem, essay, or book; -- also in the French from, l'envoi.
     The envoy of a ballad is the =\“sending” of it forth.\=   --Skeat.
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  envoy
       n 1: a diplomat having less authority than an ambassador [syn: envoy
            extraordinary, minister plenipotentiary]
       2: someone sent on a mission to represent the interests of
          someone else [syn: emissary]
       3: a brief stanza concluding certain forms of poetry [syn: envoi]