Archaic american form of 'goodbye'. It derives from the french expression "a tout a l'heure" meaning "see you later", and came into vogue in the US particularly after the second world war.
Mim : "Bye-Bye!"

Vim : "Toodle-loo!"
by spungedave March 6, 2010
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toodle-loo is used in Sesame Street's closing where Bird Bird say before the funding announces.
by CiaerwinRise25416 July 13, 2017
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