"bye" in the noun sense
1. bye, pass
an automatic advance to the next round in a tournament without playing an opponent
"he had a bye in the first round"
2. adieu, adios, arrivederci, auf wiedersehen, au revoir, bye, bye-bye, cheerio, good-by, goodby, good-bye, goodbye, good day, sayonara, so long
a farewell remark
"they said their good-byes"
Source: WordNet® (An amazing lexical database of English)
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