A*dieu" (#), interj. & adv. [OE. also adew, adewe, adue, F. dieu, fr. L. ad to + deus God.]
Good-by; farewell; an expression of kind wishes at parting.
© Webster 1913.
A*dieu", n.; pl. Adieus (#).
A farewell; commendation to the care of God at parting.
Shak.
© Webster 1913.