good-by是什么意思？

good-by

英[gʊd'baɪ] 美[gʊd'baɪ]

• int. 再见！；
• n. 告别，再见，道别的话；

英汉词典释义

• interj.
  再见!
  Good-by then!Mind how you go! 再见了,路上小心！ ‘Good-by and good riddance!’ she said to him angrily as he left. 他离开时,她生气地冲他说：“再见,你可算走了！”
• n.
  告别,再见,道别的话
  They yelled their good-bys when the bus left. 汽车开动时,他们大喊再见。 He yelled good-by to his friends. 他向朋友们高喊再见。 We said our good-bys and left. 我们告别后离去。

英英词典释义

• Noun
  1. a farewell remark;
  "they said their good-byes"