ambassador (also, embassador)
‘a messenger, a diplomatic official’
Lexical development traced from the Tamil root:
E. ambascetur, ambessedour, ambassatur, ambassadovr < O.F. embassator, ambassateor < Lat. ambactus ‘a servant, vassal’ < Ce. amb(i)actos ‘a messenger, servant’ < ambhi- ‘around’ + agere ‘to set in motion, drive’ < asuh < ag- < Tamil ukai