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Interjection: toodle-oo  'too-d(u)l,oo
  1. An informal farewell remark
    "We all stopped to say toodle-oo before her flight left";
    - cheers [Brit], chin-chin [Brit], toodle-pip [Brit], ta-ta [Brit], ta-ra [UK], bye, goodbye, bye-bye, good-bye [N. Amer], good-by [US], farewell, sayonara [US], so long, vale [archaic]

Encyclopedia: Toodle-oo