[am.bas.sa.dor] n [ME ambassadour, fr. MF ambassadeur, ultim. of Gmc origin; akin to OHG ambaht service] (14c) 1: an official envoy; esp: a diplomatic agent of the highest rank accredited to a foreign government or sovereign as the resident representative of his own government or sovereign or appointed for a special and often temporary diplomatic assignment
2. a: an authorized representative or messenger b: an unofficial representative "traveling abroad as ~s of goodwill" -- am.bas.sa.do.ri.al adj -- am.bas.sa.dor.ship n