choo choo

noun

Definition of choo choo

informal
1 or choo choo train : a railroad train used by young children or by adults speaking to young childrenHere comes the choo choo!
2 : the sound a train makes used by young children or by adults speaking to young children

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Cite this Entry

“Choo choo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/choo%20choo. Accessed 10 Aug. 2020.

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