bye-bye

NOUN /baɪ_baɪ/
7 LETTERS · 1 SYLLABLE · STARTS WITH B

bye-bye is a valid 7-letter word worth 16 points in Scrabble and 16 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
B3Y4E1-0B3Y4E1
3 + 4 + 1 + 0 + 3 + 4 + 1 =16 PTS
DOUBLE WORD → 32TRIPLE WORD → 48
MEANING

What does bye-bye mean?