au revoir

NOUN /oʊ_Rə'VWAR/
9 LETTERS · 2 SYLLABLES · STARTS WITH A

au revoir is a valid 9-letter word worth 11 points in Scrabble and 13 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1U1R1E1V4O1I1R1
1 + 1 + 0 + 1 + 1 + 4 + 1 + 1 + 1 =11 PTS
DOUBLE WORD → 22TRIPLE WORD → 33
MEANING

What does au revoir mean?