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.
A*dieu", n.; pl. Adieus (?). A farewell; commendation to the care of God at parting. Shak.